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Supplement

Green Tea Extract (EGCG)

EGCG inhibits COMT (increasing catecholamines), activates AMPK, enhances thermogenesis, provides potent antioxidant activity, and crosses BBB for neuroprotection.[1319,1344,1346, etc.]

Superscript reference numbers link to the Sources bibliography.

Strong Evidence
Fat LossLongevityCognitiveHeart HealthInflammationalias: EGCGalias: epigallocatechin gallatealias: matcha extractalias: Camellia sinensis extract

Composite Rating

3.8/5

Blends evidence depth, community direction, safety friction, and completeness.

Evidence Intensity

100/100

High depth from human/RCT/meta counts

Community Direction

9

Mixed / Neutral • confidence Minimal

Safety Friction

100/100

High signal from adverse/interaction markers

Data Completeness

100%

Studies 24 • mentions 8 • links 212

Not medical advice. This product is for educational and informational purposes only. It does not diagnose, treat, cure, or prevent any disease and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions regarding a medical condition.

FDA disclaimer: These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Results may vary. Not intended for use by pregnant or nursing women, individuals under 18, or those with known medical conditions without physician consultation.

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

Implementation Blueprint

Goal alignment: Fat Loss, Longevity, Cognitive, Heart Health, Inflammation.[516,664,888, etc.]

Dose guide: Human-study daily dose: 456 mg-800 mg/day (higher-confidence extraction from PubMed abstracts)..[516,664,888, etc.]

Category: botanical.[516,664,888, etc.]

Category

Botanical

Evidence Tier

ROBUST

Daily Guide

Human-study daily dose: 456 mg-800 mg/day (higher-confidence extraction from PubMed abstracts).

Dosing Guide

Human-study daily dose: 456 mg-800 mg/day (higher-confidence extraction from PubMed abstracts).[1319,1344,1346, etc.]

Safety and Pitfalls

  • Take with food. Max 800 mg EGCG/day — higher doses linked to rare liver injury. Decaffeinated versions available.[516,664,888, etc.]
  • Potential side effect: nausea on empty stomach[516,664,888, etc.]
  • Potential side effect: insomnia (if caffeinated)[516,664,888, etc.]
  • Potential side effect: headache[516,664,888, etc.]
  • Use caution with condition: liver disease (rare hepatotoxicity at high doses)[516,664,888, etc.]
  • Interaction check: nadolol (reduced bioavailability)[516,664,888, etc.]
  • Interaction check: iron supplements (reduced absorption)[516,664,888, etc.]
  • Legacy caution group: Liver disease[516,664,888, etc.]
  • Legacy caution group: Taking high doses on empty stomach[516,664,888, etc.]
  • Legacy caution group: Iron deficiency[516,664,888, etc.]

At-A-Glance Evidence Architecture[1319,1344,1346, etc.]

Clinical Depth

Humans: 270 • RCTs: 86 • Meta: 13

Cohort / Real-World

Cohort signals: 0

Safety Markers

Adverse signals: 241 • Interactions: 163

Evidence Tracking

Freshness, trend, and study timeline for this item

Evidence Tracking

Status

New Evidence

Trend

↑ Growing evidence base

Depth

554 total studies · 24 recent

Timeline

19982026

Top Signal Metrics[1319,1344,1346, etc.]

Total indexed

554

Animal-only studies

553

In vitro / tissue

393

Human studies

270

Safety adverse signals

241

Interaction signals

163

Community Direction Mix[516,664,888, etc.]

Weighted direction score: 9 (Mixed / Neutral)

Benefit4 (50%)
Adverse3 (38%)
No Effect0 (0%)
Mixed1 (13%)

Evidence Quality Summary[1319,1344,1346, etc.]

≥2 meta-analyses OR (≥5 RCTs AND ≥25 human studies).

Total indexed

554

Animal-only studies

553

In vitro / tissue

393

Human studies

270

Safety adverse signals

241

Interaction signals

163

Randomized trials

86

Meta-analyses

13

Study Type Breakdown

Distribution of evidence by study design strength

Meta-AnalysesLevel 1a13
Randomized TrialsLevel 1b86
Human Studies (other)Level 3-4171
All IndexedAll levels554
100

Evidence Strength: High

Composite of study volume, RCTs, and meta-analyses

Top Human Studies[1319,1344,1346, etc.]

PMID 32118296 • 2020 Mar 2

Green tea (Camellia sinensis) for the prevention of cancer.

The Cochrane database of systematic reviews

Open PubMed

PMID 26093535 • 2016 Jun

Therapeutic effect of high-dose green tea extract on weight reduction: A randomized, double-blind, placebo-controlled clinical trial.

Clinical nutrition (Edinburgh, Scotland)

Open PubMed

PMID 31084381 • 2019 Dec

Effect of green tea extract on arterial stiffness, lipid profile and sRAGE in patients with type 2 diabetes mellitus: a randomised, double-blind, placebo-controlled trial.

International journal of food sciences and nutrition

Open PubMed

PMID 38031409 • 2024 Apr 14

The effects of green tea extract supplementation on body composition, obesity-related hormones and oxidative stress markers: a grade-assessed systematic review and dose-response meta-analysis of randomised controlled trials.

The British journal of nutrition

Open PubMed

PMID 37686725 • 2023 Aug 23

Novel Multi-Ingredient Supplement Facilitates Weight Loss and Improves Body Composition in Overweight and Obese Individuals: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial.

Nutrients

Open PubMed

PMID 41010475 • 2025 Sep 13

Synergistic Effects of Green Tea Extract and Ginger Supplementation on Endurance Performance and Thermal Perception in Normothermic and Cold Environments: A Randomized, Placebo-Controlled, Double-Blind Crossover Trial.

Nutrients

Open PubMed

PMID 18468736 • 2008 Jun

Effect of green tea extract on obese women: a randomized, double-blind, placebo-controlled clinical trial.

Clinical nutrition (Edinburgh, Scotland)

Open PubMed

PMID 32289742 • 2020 Jul-Aug

Effect of green tea extract on lipid profile in patients with type 2 diabetes mellitus: A systematic review and meta-analysis.

Diabetes & metabolic syndrome

Open PubMed

PMID 41475897 • 2025 Dec 31

Identifying immunostimulatory herbal supplements that may flare autoimmune skin diseases: a systematic scoping review.

Lupus science & medicine

Open PubMed

PMID 38214689 • 2025

The impact of consuming technologically processed functional foods enriched/fortified with (poly)phenols on cardiometabolic risk factors: a systematic review of randomized controlled trials.

Critical reviews in food science and nutrition

Open PubMed

PMID 25479028 • 2015 Feb

Effect of green tea supplementation on blood pressure among overweight and obese adults: a systematic review and meta-analysis.

Journal of hypertension

Open PubMed

PMID 26757838 • 2016 May

The effects of nutritional interventions on recurrence in survivors of colorectal adenomas and cancer: a systematic review of randomised controlled trials.

European journal of clinical nutrition

Open PubMed

PMID 21715508 • 2011 Aug

Green tea intake lowers fasting serum total and LDL cholesterol in adults: a meta-analysis of 14 randomized controlled trials.

The American journal of clinical nutrition

Open PubMed

PMID 40272820 • 2025 Jul

Effects of Heat-Treated Green Tea Extract on Memory Function and Default Mode Network Connectivity in Individuals with Subjective Memory Impairment: A Randomized, Double-Blinded, Placebo-Controlled Trial.

Journal of medicinal food

Open PubMed

PMID 35859621 • 2022

New perspectives for investigating muscular perfusion response after dietary supplement intake: an exploratory, randomized, double-blind, placebo-controlled crossover trial in healthy young athletes using contrast-enhanced ultrasound (CEUS).

Journal of the International Society of Sports Nutrition

Open PubMed

PMID 27062963 • 2016 Apr

Does supplementation with green tea extract improve acne in post-adolescent women? A randomized, double-blind, and placebo-controlled clinical trial.

Complementary therapies in medicine

Open PubMed

PMID 28585735 • 2017 Jul

A Randomized, Double-blind, Placebo-controlled Clinical Trial Examining the Effects of Green Tea Extract on Systemic Lupus Erythematosus Disease Activity and Quality of Life.

Phytotherapy research : PTR

Open PubMed

PMID 30400924 • 2018 Nov 6

Effects of green tea extract on overweight and obese women with high levels of low density-lipoprotein-cholesterol (LDL-C): a randomised, double-blind, and cross-over placebo-controlled clinical trial.

BMC complementary and alternative medicine

Open PubMed

PMID 40832777 • 2025

Green Tea and Epigallocatechin Gallate (EGCG) for Cancer Prevention: A Systematic Review and Meta-Analysis.

The American journal of Chinese medicine

Open PubMed

PMID 39808292 • 2025 Jan 14

Weighing up the potential of "superfoods" compounds of green tea or turmeric as adjuncts in comparison to established therapeutical approaches for periodontal disease.

Clinical oral investigations

Open PubMed

PMID 21649457 • 2011 Jun

Does supplementation with green tea extract improve insulin resistance in obese type 2 diabetics? A randomized, double-blind, and placebo-controlled clinical trial.

Alternative medicine review : a journal of clinical therapeutic

Open PubMed

PMID 22827973 • 2012 Sep

Phase IB randomized, double-blinded, placebo-controlled, dose escalation study of polyphenon E in women with hormone receptor-negative breast cancer.

Cancer prevention research (Philadelphia, Pa.)

Open PubMed

PMID 32812270 • 2021 Jan

The effects of green tea on acne vulgaris: A systematic review and meta-analysis of randomized clinical trials.

Phytotherapy research : PTR

Open PubMed

PMID 33207344 • 2021

Effect of Green Tea on Anthropometric Indices and Body Composition in Patients with Type 2 Diabetes Mellitus: A Systematic Review and Meta-Analysis.

Complementary medicine research

Open PubMed

Community Report Frequency[516,664,888, etc.]

Benefit reports: 4

Adverse reports: 3

No-effect reports: 0

Mixed reports: 1

Unclear reports: 0

Signal confidence: 0.00

Top Reported Effects[516,664,888, etc.]

Benefits

  • Fat oxidation and metabolism boost: 1
  • Antioxidant protection: 1
  • Cancer prevention potential: 1
  • Cardiovascular protection: 1
  • Cognitive function support: 1
  • Blood sugar regulation: 1

Adverse

  • Liver disease: 1
  • Taking high doses on empty stomach: 1
  • Iron deficiency: 1

No Effect

  • insufficient no-effect reports captured: 0

One of the best-supported natural fat-loss aids. Take with food — not fasted — for liver safety. | Step2: Insufficient empirical signal for a directional adjustment.

Reddit evidence: 0 mentions (confidence 0.00).

Amazon signal: 0 products scanned (confidence 0.00).

GNC signal: 0 products scanned (confidence 0.00) [BLOCKED].

PerimeterX / captcha block encountered.

Search fetch failed: Failed to fetch after retries: https://old.reddit.com/search.json?raw_json=1&sort=relevance&t=year&limit=12&q=%22green%20tea%20extract%22%20(supplement%20OR%20dosage%20OR%20stack%20OR%20side%20effects%20OR%20review)%20(subreddit%3ASupplements%20OR%20subreddit%3ANootropics%20OR%20subreddit%3ABiohackers%20OR%20subreddit%3Alongevity%20OR%20subreddit%3ANutrition%20OR%20subreddit%3AHubermanLab%20OR%20subreddit%3ASleep%20OR%20subreddit%3AFitness%20OR%20subreddit%3Aketoscience%20OR%20subreddit%3AStackAdvice)

Fallback search failed: Failed to fetch after retries: https://old.reddit.com/search.json?raw_json=1&sort=comments&t=all&limit=16&q=%22green%20tea%20extract%22%20(supplement%20OR%20capsule%20OR%20powder%20OR%20experience%20OR%20results%20OR%20side%20effects)

Broad search failed: Failed to fetch after retries: https://old.reddit.com/search.json?raw_json=1&sort=new&t=all&limit=16&q=green%20tea%20extract

Use adverse/interactions PubMed signal counts for screening; perform clinician review before high-dose or multi-drug stack use.

Human-study daily dose signal: 456 mg-800 mg/day (confidence HIGH).

Extracted from 7 dosing mentions across 4 PubMed studies (mg/day).

Imported legacy community score: 8.0/10 (manual mapping confidence 1.00).

Legacy community note: Green tea consumption universally praised. EGCG supplements used for fat loss and antioxidant benefits. Some caution about liver toxicity at high supplemental doses. Many prefer drinking green tea over pills.

Community Evidence Examples[516,664,888, etc.]

aggregate • benefit

Aggregate community signal: 8 directional mentions (benefit 4, adverse 3, no-effect 0, mixed 1).

Open mention

Retail Signal Examples

amazon

Amazon search for Green Tea Extract (EGCG)

Rating: n/a | Reviews: n/a

Open product

Primary Source Links

Evidence Sources

  • https://pubmed.ncbi.nlm.nih.gov/?term=(%22green%20tea%20extract%22)%20AND%20(supplement*%5BTitle%2FAbstract%5D%20OR%20supplementation%5BTitle%2FAbstract%5D%20OR%20intake%5BTitle%2FAbstract%5D%20OR%20dietary%20supplements%5BMeSH%20Terms%5D)
  • https://pubmed.ncbi.nlm.nih.gov/?term=(%22green%20tea%20extract%22)%20AND%20humans%5BMeSH%20Terms%5D%20AND%20(supplement*%5BTitle%2FAbstract%5D%20OR%20supplementation%5BTitle%2FAbstract%5D%20OR%20intake%5BTitle%2FAbstract%5D%20OR%20dietary%20supplements%5BMeSH%20Terms%5D)
  • https://pubmed.ncbi.nlm.nih.gov/?term=(%22green%20tea%20extract%22)%20AND%20humans%5BMeSH%20Terms%5D%20AND%20(supplement*%5BTitle%2FAbstract%5D%20OR%20supplementation%5BTitle%2FAbstract%5D%20OR%20intake%5BTitle%2FAbstract%5D%20OR%20dietary%20supplements%5BMeSH%20Terms%5D)%20AND%20randomized%20controlled%20trial%5BPublication%20Type%5D
  • https://pubmed.ncbi.nlm.nih.gov/?term=(%22green%20tea%20extract%22)%20AND%20humans%5BMeSH%20Terms%5D%20AND%20(supplement*%5BTitle%2FAbstract%5D%20OR%20supplementation%5BTitle%2FAbstract%5D%20OR%20intake%5BTitle%2FAbstract%5D%20OR%20dietary%20supplements%5BMeSH%20Terms%5D)%20AND%20meta-analysis%5BPublication%20Type%5D
  • https://pubmed.ncbi.nlm.nih.gov/?term=(%22green%20tea%20extract%22)%20AND%20humans%5BMeSH%20Terms%5D%20AND%20(supplement*%5BTitle%2FAbstract%5D%20OR%20supplementation%5BTitle%2FAbstract%5D%20OR%20intake%5BTitle%2FAbstract%5D%20OR%20dietary%20supplements%5BMeSH%20Terms%5D)%20AND%202018%3A3000%5Bpdat%5D
  • https://pubmed.ncbi.nlm.nih.gov/32118296/
  • https://pubmed.ncbi.nlm.nih.gov/26093535/
  • https://pubmed.ncbi.nlm.nih.gov/31084381/
  • https://pubmed.ncbi.nlm.nih.gov/38031409/
  • https://pubmed.ncbi.nlm.nih.gov/37686725/
  • https://pubmed.ncbi.nlm.nih.gov/41010475/
  • https://pubmed.ncbi.nlm.nih.gov/18468736/
  • https://pubmed.ncbi.nlm.nih.gov/32289742/
  • https://pubmed.ncbi.nlm.nih.gov/41475897/
  • https://pubmed.ncbi.nlm.nih.gov/38214689/
  • https://pubmed.ncbi.nlm.nih.gov/25479028/
  • https://pubmed.ncbi.nlm.nih.gov/26757838/
  • https://pubmed.ncbi.nlm.nih.gov/21715508/
  • https://pubmed.ncbi.nlm.nih.gov/40272820/
  • https://pubmed.ncbi.nlm.nih.gov/35859621/

Community Sources

  • https://old.reddit.com/search.json?raw_json=1&sort=relevance&t=year&limit=12&q=%22green%20tea%20extract%22%20(supplement%20OR%20dosage%20OR%20stack%20OR%20side%20effects%20OR%20review)%20(subreddit%3ASupplements%20OR%20subreddit%3ANootropics%20OR%20subreddit%3ABiohackers%20OR%20subreddit%3Alongevity%20OR%20subreddit%3ANutrition%20OR%20subreddit%3AHubermanLab%20OR%20subreddit%3ASleep%20OR%20subreddit%3AFitness%20OR%20subreddit%3Aketoscience%20OR%20subreddit%3AStackAdvice)
  • https://old.reddit.com/search.json?raw_json=1&sort=comments&t=all&limit=16&q=%22green%20tea%20extract%22%20(supplement%20OR%20capsule%20OR%20powder%20OR%20experience%20OR%20results%20OR%20side%20effects)
  • https://old.reddit.com/search.json?raw_json=1&sort=new&t=all&limit=16&q=green%20tea%20extract
  • https://www.reddit.com/search/?q=Green%20Tea%20Extract%20(EGCG)

Scientific Evidence Notes[1319,1344,1346, etc.]

1. Green tea catechins and body weight: MA of 15 RCTs

META_ANALYSIS • 2015 • Adults

15 RCTs with 1243 subjects.

Outcome: GTE with caffeine significantly reduced body weight (−1.38 kg), waist circumference, and body fat vs placebo over 12+ weeks.[1319,1344,1346, etc.]

Open source
2. Green tea and cardiovascular risk: MA of prospective studies

META_ANALYSIS • 2011 • Adults

13 studies with 283,622 subjects.

Outcome: Drinking 3+ cups/day (equivalent to ~300 mg catechins) reduced CVD mortality (RR 0.74) and stroke risk (RR 0.80).[1319,1344,1346, etc.]

Open source
3. EGCG and LDL cholesterol: MA of RCTs

META_ANALYSIS • 2016 • Adults

14 RCTs with 1136 subjects.

Outcome: EGCG supplementation reduced LDL by −5.3 mg/dL and total cholesterol; no effect on HDL or triglycerides.[1319,1344,1346, etc.]

Open source
4. PubMed evidence summary: Green Tea Extract

PUBMED • Humans + preclinical triage

Counts aggregated from automated literature sweep and tiering rules.

Outcome: Tier HIGH; humans 270, RCTs 86, meta-analyses 13.[1319,1344,1346, etc.]

Open source
5. Green tea (Camellia sinensis) for the prevention of cancer.

PUBMED • 2020 • Human evidence curation set

PMID 32118296 from The Cochrane database of systematic reviews.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
6. Therapeutic effect of high-dose green tea extract on weight reduction: A randomized, double-blind, placebo-controlled clinical trial.

PUBMED • 2016 • Human evidence curation set

PMID 26093535 from Clinical nutrition (Edinburgh, Scotland).

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
7. Effect of green tea extract on arterial stiffness, lipid profile and sRAGE in patients with type 2 diabetes mellitus: a randomised, double-blind, placebo-controlled trial.

PUBMED • 2019 • Human evidence curation set

PMID 31084381 from International journal of food sciences and nutrition.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
8. The effects of green tea extract supplementation on body composition, obesity-related hormones and oxidative stress markers: a grade-assessed systematic review and dose-response meta-analysis of randomised controlled trials.

PUBMED • 2024 • Human evidence curation set

PMID 38031409 from The British journal of nutrition.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
9. Novel Multi-Ingredient Supplement Facilitates Weight Loss and Improves Body Composition in Overweight and Obese Individuals: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial.

PUBMED • 2023 • Human evidence curation set

PMID 37686725 from Nutrients.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
10. Synergistic Effects of Green Tea Extract and Ginger Supplementation on Endurance Performance and Thermal Perception in Normothermic and Cold Environments: A Randomized, Placebo-Controlled, Double-Blind Crossover Trial.

PUBMED • 2025 • Human evidence curation set

PMID 41010475 from Nutrients.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
11. Effect of green tea extract on obese women: a randomized, double-blind, placebo-controlled clinical trial.

PUBMED • 2008 • Human evidence curation set

PMID 18468736 from Clinical nutrition (Edinburgh, Scotland).

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
12. Effect of green tea extract on lipid profile in patients with type 2 diabetes mellitus: A systematic review and meta-analysis.

PUBMED • 2020 • Human evidence curation set

PMID 32289742 from Diabetes & metabolic syndrome.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
13. Identifying immunostimulatory herbal supplements that may flare autoimmune skin diseases: a systematic scoping review.

PUBMED • 2025 • Human evidence curation set

PMID 41475897 from Lupus science & medicine.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
14. The impact of consuming technologically processed functional foods enriched/fortified with (poly)phenols on cardiometabolic risk factors: a systematic review of randomized controlled trials.

PUBMED • 2025 • Human evidence curation set

PMID 38214689 from Critical reviews in food science and nutrition.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
15. Effect of green tea supplementation on blood pressure among overweight and obese adults: a systematic review and meta-analysis.

PUBMED • 2015 • Human evidence curation set

PMID 25479028 from Journal of hypertension.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
16. The effects of nutritional interventions on recurrence in survivors of colorectal adenomas and cancer: a systematic review of randomised controlled trials.

PUBMED • 2016 • Human evidence curation set

PMID 26757838 from European journal of clinical nutrition.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
17. Green tea intake lowers fasting serum total and LDL cholesterol in adults: a meta-analysis of 14 randomized controlled trials.

PUBMED • 2011 • Human evidence curation set

PMID 21715508 from The American journal of clinical nutrition.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
18. Effects of Heat-Treated Green Tea Extract on Memory Function and Default Mode Network Connectivity in Individuals with Subjective Memory Impairment: A Randomized, Double-Blinded, Placebo-Controlled Trial.

PUBMED • 2025 • Human evidence curation set

PMID 40272820 from Journal of medicinal food.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
19. New perspectives for investigating muscular perfusion response after dietary supplement intake: an exploratory, randomized, double-blind, placebo-controlled crossover trial in healthy young athletes using contrast-enhanced ultrasound (CEUS).

PUBMED • 2022 • Human evidence curation set

PMID 35859621 from Journal of the International Society of Sports Nutrition.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
20. Does supplementation with green tea extract improve acne in post-adolescent women? A randomized, double-blind, and placebo-controlled clinical trial.

PUBMED • 2016 • Human evidence curation set

PMID 27062963 from Complementary therapies in medicine.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
21. A Randomized, Double-blind, Placebo-controlled Clinical Trial Examining the Effects of Green Tea Extract on Systemic Lupus Erythematosus Disease Activity and Quality of Life.

PUBMED • 2017 • Human evidence curation set

PMID 28585735 from Phytotherapy research : PTR.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
22. Effects of green tea extract on overweight and obese women with high levels of low density-lipoprotein-cholesterol (LDL-C): a randomised, double-blind, and cross-over placebo-controlled clinical trial.

PUBMED • 2018 • Human evidence curation set

PMID 30400924 from BMC complementary and alternative medicine.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
23. Green Tea and Epigallocatechin Gallate (EGCG) for Cancer Prevention: A Systematic Review and Meta-Analysis.

PUBMED • 2025 • Human evidence curation set

PMID 40832777 from The American journal of Chinese medicine.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
24. Weighing up the potential of "superfoods" compounds of green tea or turmeric as adjuncts in comparison to established therapeutical approaches for periodontal disease.

PUBMED • 2025 • Human evidence curation set

PMID 39808292 from Clinical oral investigations.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
25. Does supplementation with green tea extract improve insulin resistance in obese type 2 diabetics? A randomized, double-blind, and placebo-controlled clinical trial.

PUBMED • 2011 • Human evidence curation set

PMID 21649457 from Alternative medicine review : a journal of clinical therapeutic.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
26. Phase IB randomized, double-blinded, placebo-controlled, dose escalation study of polyphenon E in women with hormone receptor-negative breast cancer.

PUBMED • 2012 • Human evidence curation set

PMID 22827973 from Cancer prevention research (Philadelphia, Pa.).

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
27. The effects of green tea on acne vulgaris: A systematic review and meta-analysis of randomized clinical trials.

PUBMED • 2021 • Human evidence curation set

PMID 32812270 from Phytotherapy research : PTR.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
28. Effect of Green Tea on Anthropometric Indices and Body Composition in Patients with Type 2 Diabetes Mellitus: A Systematic Review and Meta-Analysis.

PUBMED • 2021 • Human evidence curation set

PMID 33207344 from Complementary medicine research.

Outcome: See linked PubMed abstract for methods and outcomes.[1319,1344,1346, etc.]

Open source
29. Effects of green tea or green tea extract on insulin sensitivity and glycaemic control in populations at risk of type 2 diabetes mellitus: a systematic review and meta-analysis of randomised controlled trials.

META_ANALYSIS • 2014 • PubMed indexed study

PMID 24206044 from Journal of human nutrition and dietetics : the official journal of the British Dietetic Association.

Outcome: Study design: META_ANALYSIS. Quality score: 9.1/10.[1319,1344,1346, etc.]

Open source
30. [Effect of green tea or green tea extract consumption on body weight and body composition; systematic review and meta-analysis].

META_ANALYSIS • 2014 • PubMed indexed study

PMID 24558988 from Nutricion hospitalaria.

Outcome: Study design: META_ANALYSIS. Quality score: 9.1/10.[1319,1344,1346, etc.]

Open source
31. Polyphenol Intervention Ameliorates Non-Alcoholic Fatty Liver Disease: An Updated Comprehensive Systematic Review.

SYSTEMATIC_REVIEW • 2024 • PubMed indexed study

PMID 39683546 from Nutrients.

Outcome: Study design: SYSTEMATIC_REVIEW. Quality score: 9.1/10.[1319,1344,1346, etc.]

Open source
32. Safety of green tea extracts : a systematic review by the US Pharmacopeia.

SYSTEMATIC_REVIEW • 2008 • PubMed indexed study

PMID 18484782 from Drug safety.

Outcome: Study design: SYSTEMATIC_REVIEW. Quality score: 9.1/10.[1319,1344,1346, etc.]

Open source
33. Effects of green tea catechin extract on serum lipids in postmenopausal women: a randomized, placebo-controlled clinical trial.

RCT • 2016 • PubMed indexed study

PMID 27806972 from The American journal of clinical nutrition.

Outcome: Study design: RCT. Quality score: 9.0/10.[1319,1344,1346, etc.]

Open source
34. Evaluating the Effect of Epigallocatechin Gallate (EGCG) in Reducing Folate Levels in Reproductive Aged Women by MTHFR and DHFR Genotype in Combination With Letrozole or Clomiphene.

RCT • 2025 • PubMed indexed study

PMID 40077973 from Clinical and translational science.

Outcome: Study design: RCT. Quality score: 8.8/10.[1319,1344,1346, etc.]

Open source
35. Effects of chronic decaffeinated green tea extract supplementation on lipolysis and substrate utilization during upper body exercise.

RCT • 2021 • PubMed indexed study

PMID 33742603 from Journal of sport and health science.

Outcome: Study design: RCT. Quality score: 8.7/10.[1319,1344,1346, etc.]

Open source
36. Potential therapeutic effects of green tea on obese lipid profile - a systematic review.

SYSTEMATIC_REVIEW • 2022 • PubMed indexed study

PMID 35014893 from Nutrition and health.

Outcome: Study design: SYSTEMATIC_REVIEW. Quality score: 8.7/10.[1319,1344,1346, etc.]

Open source
37. Effectiveness of green tea extract (Camellia sinensis) capsule supplementation for post-exercise muscle recovery in healthy adults: a systematic review protocol.

SYSTEMATIC_REVIEW • 2022 • PubMed indexed study

PMID 34966132 from JBI evidence synthesis.

Outcome: Study design: SYSTEMATIC_REVIEW. Quality score: 8.7/10.[1319,1344,1346, etc.]

Open source
38. The safety of green tea and green tea extract consumption in adults - Results of a systematic review.

SYSTEMATIC_REVIEW • 2018 • PubMed indexed study

PMID 29580974 from Regulatory toxicology and pharmacology : RTP.

Outcome: Study design: SYSTEMATIC_REVIEW. Quality score: 8.6/10.[1319,1344,1346, etc.]

Open source
39. No effect of 1 or 7 d of green tea extract ingestion on fat oxidation during exercise.

RCT • 2013 • PubMed indexed study

PMID 23247713 from Medicine and science in sports and exercise.

Outcome: Study design: RCT. Quality score: 8.5/10.[1319,1344,1346, etc.]

Open source
40. Effect of endurance training supplemented with green tea extract on substrate metabolism during exercise in humans.

RCT • 2011 • PubMed indexed study

PMID 20459475 from Scandinavian journal of medicine & science in sports.

Outcome: Study design: RCT. Quality score: 8.5/10.[1319,1344,1346, etc.]

Open source
41. Oral preoperative antioxidants in pancreatic surgery: a double-blind, randomized, clinical trial.

RCT • 2012 • PubMed indexed study

PMID 21890323 from Nutrition (Burbank, Los Angeles County, Calif.).

Outcome: Study design: RCT. Quality score: 8.5/10.[1319,1344,1346, etc.]

Open source
42. Effect of acute administration of an herbal preparation on blood pressure and heart rate in humans.

RCT • 2011 • PubMed indexed study

PMID 21448304 from International journal of medical sciences.

Outcome: Study design: RCT. Quality score: 8.5/10.[1319,1344,1346, etc.]

Open source
43. HTLV-1 provirus load in peripheral blood lymphocytes of HTLV-1 carriers is diminished by green tea drinking.

RCT • 2004 • PubMed indexed study

PMID 15245597 from Cancer science.

Outcome: Study design: RCT. Quality score: 8.5/10.[1319,1344,1346, etc.]

Open source
44. Green Tea Catechin Extract Supplementation Does Not Influence Circulating Sex Hormones and Insulin-Like Growth Factor Axis Proteins in a Randomized Controlled Trial of Postmenopausal Women at High Risk of Breast Cancer.

RCT • 2019 • PubMed indexed study

PMID 30926986 from The Journal of nutrition.

Outcome: Study design: RCT. Quality score: 8.3/10.[1319,1344,1346, etc.]

Open source
45. Protocol for minimizing the risk of metachronous adenomas of the colorectum with green tea extract (MIRACLE): a randomised controlled trial of green tea extract versus placebo for nutriprevention of metachronous colon adenomas in the elderly population.

RCT • 2011 • PubMed indexed study

PMID 21851602 from BMC cancer.

Outcome: Study design: RCT. Quality score: 8.3/10.[1319,1344,1346, etc.]

Open source
46. A randomized controlled trial of green tea catechins in protection against ultraviolet radiation-induced cutaneous inflammation.

RCT • 2015 • PubMed indexed study

PMID 26178731 from The American journal of clinical nutrition.

Outcome: Study design: RCT. Quality score: 8.2/10.[1319,1344,1346, etc.]

Open source
47. The effect of green tea extract supplementation on exercise-induced oxidative stress parameters in male sprinters.

RCT • 2015 • PubMed indexed study

PMID 25120110 from European journal of nutrition.

Outcome: Study design: RCT. Quality score: 8.2/10.[1319,1344,1346, etc.]

Open source
48. Green tea (Camellia sinensis) for patients with knee osteoarthritis: A randomized open-label active-controlled clinical trial.

RCT • 2018 • PubMed indexed study

PMID 28038881 from Clinical nutrition (Edinburgh, Scotland).

Outcome: Study design: RCT. Quality score: 8.2/10.[1319,1344,1346, etc.]

Open source
49. Long-term green tea extract supplementation does not affect fat absorption, resting energy expenditure, and body composition in adults.

RCT • 2015 • PubMed indexed study

PMID 25740906 from The Journal of nutrition.

Outcome: Study design: RCT. Quality score: 8.2/10.[1319,1344,1346, etc.]

Open source
50. Supplementation with Brazil nuts and green tea extract regulates targeted biomarkers related to colorectal cancer risk in humans.

RCT • 2016 • PubMed indexed study

PMID 27923410 from The British journal of nutrition.

Outcome: Study design: RCT. Quality score: 8.2/10.[1319,1344,1346, etc.]

Open source
51. Acute effects of green tea extract intake on exogenous and endogenous metabolites in human plasma.

RCT • 2014 • PubMed indexed study

PMID 24400998 from Journal of agricultural and food chemistry.

Outcome: Study design: RCT. Quality score: 8.2/10.[1319,1344,1346, etc.]

Open source
52. Long-Term Supplementation of Green Tea Extract Does Not Modify Adiposity or Bone Mineral Density in a Randomized Trial of Overweight and Obese Postmenopausal Women.

RCT • 2016 • PubMed indexed study

PMID 26701796 from The Journal of nutrition.

Outcome: Study design: RCT. Quality score: 8.2/10.[1319,1344,1346, etc.]

Open source
53. Green Tea Extract and Catechol-O-Methyltransferase Genotype Modify Fasting Serum Insulin and Plasma Adiponectin Concentrations in a Randomized Controlled Trial of Overweight and Obese Postmenopausal Women.

RCT • 2016 • PubMed indexed study

PMID 26581683 from The Journal of nutrition.

Outcome: Study design: RCT. Quality score: 8.2/10.[1319,1344,1346, etc.]

Open source
54. Green tea extracts for the prevention of metachronous colorectal polyps among patients who underwent endoscopic removal of colorectal adenomas: A randomized clinical trial.

RCT • 2018 • PubMed indexed study

PMID 28209333 from Clinical nutrition (Edinburgh, Scotland).

Outcome: Study design: RCT. Quality score: 8.2/10.[1319,1344,1346, etc.]

Open source
55. Hepatotoxicity with High-Dose Green Tea Extract: Effect of Catechol-O-Methyltransferase and Uridine 5'-Diphospho-glucuronosyltransferase 1A4 Genotypes.

RCT • 2023 • PubMed indexed study

PMID 36178169 from Journal of dietary supplements.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
56. Effects of Green Tea Extract Supplementation on Inflammatory Cytokines Among Postmenopausal Women with Overweight or Obesity-A Secondary Analysis of a Randomized Controlled Trial.

RCT • 2026 • PubMed indexed study

PMID 41515260 from Nutrients.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
57. Randomized controlled trial for an effect of green tea-extract powder supplementation on glucose abnormalities.

RCT • 2008 • PubMed indexed study

PMID 17554248 from European journal of clinical nutrition.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
58. Neural effects of green tea extract on dorsolateral prefrontal cortex.

RCT • 2012 • PubMed indexed study

PMID 22929964 from European journal of clinical nutrition.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
59. Green tea extract ingestion, fat oxidation, and glucose tolerance in healthy humans.

RCT • 2008 • PubMed indexed study

PMID 18326618 from The American journal of clinical nutrition.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
60. Metabolic response to green tea extract during rest and moderate-intensity exercise.

RCT • 2013 • PubMed indexed study

PMID 22974973 from The Journal of nutritional biochemistry.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
61. Green tea extract supplementation does not modify plasma concentration of F(2)-isoprostanes in women who are postmenopause: Findings from a randomized controlled trial.

RCT • 2023 • PubMed indexed study

PMID 37011435 from Nutrition research (New York, N.Y.).

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
62. Green tea extract only affects markers of oxidative status postprandially: lasting antioxidant effect of flavonoid-free diet.

RCT • 2002 • PubMed indexed study

PMID 12064344 from The British journal of nutrition.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
63. The effect of caffeine, green tea and tyrosine on thermogenesis and energy intake.

RCT • 2009 • PubMed indexed study

PMID 17882140 from European journal of clinical nutrition.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
64. An antiinflammatory dietary mix modulates inflammation and oxidative and metabolic stress in overweight men: a nutrigenomics approach.

RCT • 2010 • PubMed indexed study

PMID 20181810 from The American journal of clinical nutrition.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
65. Supplementation with lutein or lutein plus green tea extracts does not change oxidative stress in adequately nourished older adults.

RCT • 2010 • PubMed indexed study

PMID 19447020 from The Journal of nutritional biochemistry.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
66. Health effects of green tea catechins in overweight and obese men: a randomised controlled cross-over trial.

RCT • 2011 • PubMed indexed study

PMID 21736785 from The British journal of nutrition.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
67. Daily consumption of an aqueous green tea extract supplement does not impair liver function or alter cardiovascular disease risk biomarkers in healthy men.

RCT • 2009 • PubMed indexed study

PMID 19056646 from The Journal of nutrition.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
68. Bioavailability and antioxidant activity of tea flavanols after consumption of green tea, black tea, or a green tea extract supplement.

RCT • 2004 • PubMed indexed study

PMID 15585768 from The American journal of clinical nutrition.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
69. Bioactive food stimulants of sympathetic activity: effect on 24-h energy expenditure and fat oxidation.

RCT • 2005 • PubMed indexed study

PMID 15870822 from European journal of clinical nutrition.

Outcome: Study design: RCT. Quality score: 8.1/10.[1319,1344,1346, etc.]

Open source
70. A 60-Day Green Tea Extract Supplementation Counteracts the Dysfunction of Adipose Tissue in Overweight Post-Menopausal and Class I Obese Women.

RCT • 2022 • PubMed indexed study

PMID 36558368 from Nutrients.

Outcome: Study design: RCT. Quality score: 8.0/10.[1319,1344,1346, etc.]

Open source
71. Green Tea Extract Concurrent with an Oral Nutritional Supplement Acutely Enhances Muscle Microvascular Blood Flow without Altering Leg Glucose Uptake in Healthy Older Adults.

RCT • 2021 • PubMed indexed study

PMID 34836149 from Nutrients.

Outcome: Study design: RCT. Quality score: 8.0/10.[1319,1344,1346, etc.]

Open source
72. Green tea catechins prevent low-density lipoprotein oxidation via their accumulation in low-density lipoprotein particles in humans.

RCT • 2016 • PubMed indexed study

PMID 26773777 from Nutrition research (New York, N.Y.).

Outcome: Study design: RCT. Quality score: 7.9/10.[1319,1344,1346, etc.]

Open source
73. The Effect of Green Tea and Sour Tea (Hibiscus sabdariffa L.) Supplementation on Oxidative Stress and Muscle Damage in Athletes.

RCT • 2017 • PubMed indexed study

PMID 27736246 from Journal of dietary supplements.

Outcome: Study design: RCT. Quality score: 7.9/10.[1319,1344,1346, etc.]

Open source
74. A Mixed Flavonoid-Fish Oil Supplement Induces Immune-Enhancing and Anti-Inflammatory Transcriptomic Changes in Adult Obese and Overweight Women-A Randomized Controlled Trial.

RCT • 2016 • PubMed indexed study

PMID 27187447 from Nutrients.

Outcome: Study design: RCT. Quality score: 7.9/10.[1319,1344,1346, etc.]

Open source
75. Effectiveness of a novel herbal agent MB-6 as a potential adjunct to 5-fluoracil-based chemotherapy in colorectal cancer.

RCT • 2014 • PubMed indexed study

PMID 25150117 from Nutrition research (New York, N.Y.).

Outcome: Study design: RCT. Quality score: 7.9/10.[1319,1344,1346, etc.]

Open source
76. Green tea extract supplementation gives protection against exercise-induced oxidative damage in healthy men.

RCT • 2011 • PubMed indexed study

PMID 22118751 from Nutrition research (New York, N.Y.).

Outcome: Study design: RCT. Quality score: 7.8/10.[1319,1344,1346, etc.]

Open source
77. Green tea supplementation increases glutathione and plasma antioxidant capacity in adults with the metabolic syndrome.

RCT • 2013 • PubMed indexed study

PMID 23507223 from Nutrition research (New York, N.Y.).

Outcome: Study design: RCT. Quality score: 7.8/10.[1319,1344,1346, etc.]

Open source
78. Green tea extract reduces blood pressure, inflammatory biomarkers, and oxidative stress and improves parameters associated with insulin resistance in obese, hypertensive patients.

RCT • 2012 • PubMed indexed study

PMID 22749178 from Nutrition research (New York, N.Y.).

Outcome: Study design: RCT. Quality score: 7.8/10.[1319,1344,1346, etc.]

Open source
79. Genomewide association analysis on green tea chemoprevention of colorectal adenoma: the importance of SLCO1A2 variants.

RCT • 2025 • PubMed indexed study

PMID 40433816 from Pharmacogenomics.

Outcome: Study design: RCT. Quality score: 7.8/10.[1319,1344,1346, etc.]

Open source
80. Green tea extracts for the prevention of metachronous colorectal adenomas: a pilot study.

RCT • 2008 • PubMed indexed study

PMID 18990744 from Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology.

Outcome: Study design: RCT. Quality score: 7.8/10.[1319,1344,1346, etc.]

Open source
81. Effects of a ready-to-drink thermogenic beverage on resting energy expenditure, hemodynamic function, and subjective outcomes.

RCT • 2023 • PubMed indexed study

PMID 37162193 from Journal of the International Society of Sports Nutrition.

Outcome: Study design: RCT. Quality score: 7.8/10.[1319,1344,1346, etc.]

Open source
82. The effects of a newly developed beverage powder supplement on anthropometric measures, body composition, metabolic syndrome components, and appetite in obese or overweight adults: a protocol for a randomized clinical trial study.

RCT • 2025 • PubMed indexed study

PMID 41163054 from Trials.

Outcome: Study design: RCT. Quality score: 7.8/10.[1319,1344,1346, etc.]

Open source
83. Green tea extract for mild-to-moderate diabetic peripheral neuropathy A randomized controlled trial.

RCT • 2021 • PubMed indexed study

PMID 33517103 from Complementary therapies in clinical practice.

Outcome: Study design: RCT. Quality score: 7.7/10.[1319,1344,1346, etc.]

Open source
84. Exposure of Fexofenadine, but Not Pseudoephedrine, Is Markedly Decreased by Green Tea Extract in Healthy Volunteers.

RCT • 2022 • PubMed indexed study

PMID 35678032 from Clinical pharmacology and therapeutics.

Outcome: Study design: RCT. Quality score: 7.7/10.[1319,1344,1346, etc.]

Open source
85. Effects of green tea extract supplementation and endurance training on irisin, pro-inflammatory cytokines, and adiponectin concentrations in overweight middle-aged men.

RCT • 2020 • PubMed indexed study

PMID 32095935 from European journal of applied physiology.

Outcome: Study design: RCT. Quality score: 7.7/10.[1319,1344,1346, etc.]

Open source
86. Prospective randomized trial evaluating blood and prostate tissue concentrations of green tea polyphenols and quercetin in men with prostate cancer.

RCT • 2020 • PubMed indexed study

PMID 32347270 from Food & function.

Outcome: Study design: RCT. Quality score: 7.7/10.[1319,1344,1346, etc.]

Open source
87. Effects of medium-term green tea extract supplementation combined with CrossFit workout on blood antioxidant status and serum brain-derived neurotrophic factor in young men: a pilot study.

RCT • 2019 • PubMed indexed study

PMID 30898134 from Journal of the International Society of Sports Nutrition.

Outcome: Study design: RCT. Quality score: 7.7/10.[1319,1344,1346, etc.]

Open source
88. Influence of green tea consumption on endoxifen steady-state concentration in breast cancer patients treated with tamoxifen.

RCT • 2020 • PubMed indexed study

PMID 32803636 from Breast cancer research and treatment.

Outcome: Study design: RCT. Quality score: 7.7/10.[1319,1344,1346, etc.]

Open source
89. Efficacy of antioxidants therapy on progression of periodontal disease - A randomized control trial.

RCT • 2021 • PubMed indexed study

PMID 34810387 from Indian journal of dental research : official publication of Indian Society for Dental Research.

Outcome: Study design: RCT. Quality score: 7.7/10.[1319,1344,1346, etc.]

Open source
90. Effects of oral administration of common antioxidant supplements on the energy metabolism of red blood cells. Attenuation of oxidative stress-induced changes in Rett syndrome erythrocytes by CoQ10.

RCT • 2020 • PubMed indexed study

PMID 31595423 from Molecular and cellular biochemistry.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 7.7/10.[1319,1344,1346, etc.]

Open source
91. Effect of green tea extract supplementation on exercise-induced delayed onset muscle soreness and muscular damage.

RCT • 2018 • PubMed indexed study

PMID 29746891 from Physiology & behavior.

Outcome: Study design: RCT. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
92. A Randomized Controlled Trial of Green Tea Extract Supplementation and Mammographic Density in Postmenopausal Women at Increased Risk of Breast Cancer.

RCT • 2017 • PubMed indexed study

PMID 28904061 from Cancer prevention research (Philadelphia, Pa.).

Outcome: Study design: RCT. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
93. Effect of Green Tea Supplements on Liver Enzyme Elevation: Results from a Randomized Intervention Study in the United States.

RCT • 2017 • PubMed indexed study

PMID 28765194 from Cancer prevention research (Philadelphia, Pa.).

Outcome: Study design: RCT. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
94. Polyphenol supplementation alters intramuscular apoptotic signaling following acute resistance exercise.

RCT • 2018 • PubMed indexed study

PMID 29380956 from Physiological reports.

Outcome: Study design: RCT. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
95. Green tea extract and catechol-O-methyltransferase genotype modify the post-prandial serum insulin response in a randomised trial of overweight and obese post-menopausal women.

RCT • 2017 • PubMed indexed study

PMID 27600055 from Journal of human nutrition and dietetics : the official journal of the British Dietetic Association.

Outcome: Study design: RCT. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
96. Personalized Cardio-Metabolic Responses to an Anti-Inflammatory Nutrition Intervention in Obese Adolescents: A Randomized Controlled Crossover Trial.

RCT • 2018 • PubMed indexed study

PMID 29665620 from Molecular nutrition & food research.

Outcome: Study design: RCT. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
97. Effects of dietary green tea (Camellia sinensis L.) supplementation on growth performance, lipid metabolism, and antioxidant status in a sturgeon hybrid of Sterlet (Huso huso ♂ × Acipenser ruthenus ♀) fed oxidized fish oil.

RCT • 2017 • PubMed indexed study

PMID 28488192 from Fish physiology and biochemistry.

Outcome: Study design: RCT. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
98. Short-term Effects of Green Tea on Blood Pressure, Endothelial Function, and Metabolic Profile in Obese Prehypertensive Women: A Crossover Randomized Clinical Trial.

RCT • 2017 • PubMed indexed study

PMID 27797683 from Journal of the American College of Nutrition.

Outcome: Study design: RCT. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
99. Effects of rye bread enriched with green tea extract on weight maintenance and the characteristics of metabolic syndrome following weight loss: a pilot study.

RCT • 2015 • PubMed indexed study

PMID 25494205 from Journal of medicinal food.

Outcome: Study design: RCT. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
100. The safety of green tea extract supplementation in postmenopausal women at risk for breast cancer: results of the Minnesota Green Tea Trial.

RCT • 2015 • PubMed indexed study

PMID 26051348 from Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association.

Outcome: Study design: RCT. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
101. Acute effectiveness of a "fat-loss" product on substrate utilization, perception of hunger, mood state and rate of perceived exertion at rest and during exercise.

RCT • 2015 • PubMed indexed study

PMID 26612980 from Journal of the International Society of Sports Nutrition.

Outcome: Study design: RCT. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
102. Green tea influences intestinal assimilation of lipids in humans: a pilot study.

RCT • 2015 • PubMed indexed study

PMID 25683932 from European review for medical and pharmacological sciences.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 7.6/10.[1319,1344,1346, etc.]

Open source
103. A green tea extract high in catechins reduces body fat and cardiovascular risks in humans.

RCT • 2007 • PubMed indexed study

PMID 17557985 from Obesity (Silver Spring, Md.).

Outcome: Study design: RCT. Quality score: 7.5/10.[1319,1344,1346, etc.]

Open source
104. Green tea supplementation affects body weight, lipids, and lipid peroxidation in obese subjects with metabolic syndrome.

RCT • 2010 • PubMed indexed study

PMID 20595643 from Journal of the American College of Nutrition.

Outcome: Study design: RCT. Quality score: 7.5/10.[1319,1344,1346, etc.]

Open source
105. Green tea polyphenols supplementation and Tai Chi exercise for postmenopausal osteopenic women: safety and quality of life report.

RCT • 2010 • PubMed indexed study

PMID 21143878 from BMC complementary and alternative medicine.

Outcome: Study design: RCT. Quality score: 7.5/10.[1319,1344,1346, etc.]

Open source
106. Effect of 2-month controlled green tea intervention on lipoprotein cholesterol, glucose, and hormone levels in healthy postmenopausal women.

RCT • 2012 • PubMed indexed study

PMID 22246619 from Cancer prevention research (Philadelphia, Pa.).

Outcome: Study design: RCT. Quality score: 7.5/10.[1319,1344,1346, etc.]

Open source
107. Effects of green tea supplementation on elements, total antioxidants, lipids, and glucose values in the serum of obese patients.

RCT • 2012 • PubMed indexed study

PMID 22581111 from Biological trace element research.

Outcome: Study design: RCT. Quality score: 7.5/10.[1319,1344,1346, etc.]

Open source
108. The impact of the catechol-O-methyltransferase genotype on vascular function and blood pressure after acute green tea ingestion.

RCT • 2012 • PubMed indexed study

PMID 22707271 from Molecular nutrition & food research.

Outcome: Study design: RCT. Quality score: 7.5/10.[1319,1344,1346, etc.]

Open source
109. Greeen tea extracts lower serum folates in rats at very high dietary concentrations only and do not affect plasma folates in a human pilot study.

RCT • 2009 • PubMed indexed study

PMID 19826188 from Journal of physiology and pharmacology : an official journal of the Polish Physiological Society.

Outcome: Study design: RCT. Quality score: 7.5/10.[1319,1344,1346, etc.]

Open source
110. Green tea minimally affects biomarkers of inflammation in obese subjects with metabolic syndrome.

RCT • 2011 • PubMed indexed study

PMID 20605696 from Nutrition (Burbank, Los Angeles County, Calif.).

Outcome: Study design: RCT. Quality score: 7.5/10.[1319,1344,1346, etc.]

Open source
111. Impact of Bifidobacterium animalis subsp. lactis BB-12 and, Lactobacillus acidophilus LA-5-containing yoghurt, on fecal bacterial counts of healthy adults.

RCT • 2011 • PubMed indexed study

PMID 21296446 from International journal of food microbiology.

Outcome: Study design: RCT. Quality score: 7.5/10.[1319,1344,1346, etc.]

Open source
112. The effects of polyphenol-containing antioxidants on oxidative stress and lipid peroxidation in Type 2 diabetes mellitus without complications.

RCT • 2010 • PubMed indexed study

PMID 19834314 from Journal of endocrinological investigation.

Outcome: Study design: RCT. Quality score: 7.5/10.[1319,1344,1346, etc.]

Open source
113. Population nutrikinetics of green tea extract.

RCT • 2018 • PubMed indexed study

PMID 29466429 from PloS one.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 7.2/10.[1319,1344,1346, etc.]

Open source
114. Effect of green tea extract supplementation on glycogen replenishment in exercised human skeletal muscle.

RCT • 2017 • PubMed indexed study

PMID 28631582 from The British journal of nutrition.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 7.2/10.[1319,1344,1346, etc.]

Open source
115. Metabolic response to decaffeinated green tea extract during rest and moderate-intensity exercise.

RCT • 2014 • PubMed indexed study

PMID 25195522 from Journal of agricultural and food chemistry.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 7.2/10.[1319,1344,1346, etc.]

Open source
116. A preliminary investigation of the impact of catechol-O-methyltransferase genotype on the absorption and metabolism of green tea catechins.

RCT • 2012 • PubMed indexed study

PMID 21445620 from European journal of nutrition.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 7.1/10.[1319,1344,1346, etc.]

Open source
117. The impact of the catechol-O-methyltransferase genotype on the acute responsiveness of vascular reactivity to a green tea extract.

RCT • 2011 • PubMed indexed study

PMID 21144097 from The British journal of nutrition.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 7.1/10.[1319,1344,1346, etc.]

Open source
118. Bioavailability of polyphenon E flavan-3-ols in humans with an ileostomy.

RCT • 2008 • PubMed indexed study

PMID 18641203 from The Journal of nutrition.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 7.1/10.[1319,1344,1346, etc.]

Open source
119. Dietary supplementation with green tea extract promotes enhanced human leukocyte activity.

RCT • 2015 • PubMed indexed study

PMID 26259232 from Journal of complementary & integrative medicine.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 6.6/10.[1319,1344,1346, etc.]

Open source
120. No effect of short-term green tea extract supplementation on metabolism at rest or during exercise in the fed state.

RCT • 2014 • PubMed indexed study

PMID 24903465 from International journal of sport nutrition and exercise metabolism.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 6.6/10.[1319,1344,1346, etc.]

Open source
121. A Presurgical Study of Lecithin Formulation of Green Tea Extract in Women with Early Breast Cancer.

RCT • 2017 • PubMed indexed study

PMID 28400479 from Cancer prevention research (Philadelphia, Pa.).

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 6.6/10.[1319,1344,1346, etc.]

Open source
122. High-intensity interval walking in combination with acute green tea extract supplementation reduces postprandial blood glucose concentrations in physically inactive participants.

RCT • 2018 • PubMed indexed study

PMID 30175692 from Nutrition and health.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 6.6/10.[1319,1344,1346, etc.]

Open source
123. Oral administration of a decaffeinated green tea (Camellia sinensis) extract did not alter urinary 8-epi-prostaglandin F(2 alpha), a biomarker for in-vivo lipid peroxidation.

RCT • 2005 • PubMed indexed study

PMID 16259767 from The Journal of pharmacy and pharmacology.

Outcome: Study design: CONTROLLED_TRIAL. Quality score: 6.5/10.[1319,1344,1346, etc.]

Open source
124. The Evolving Profile of Idiosyncratic Drug-Induced Liver Injury.

PUBMED • 2023 • PubMed indexed study

PMID 36868489 from Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 5.8/10.[1319,1344,1346, etc.]

Open source
125. Advanced nutraceutical approaches to Parkinson's disease: bridging nutrition and neuroprotection.

PUBMED • 2025 • PubMed indexed study

PMID 39992884 from Nutritional neuroscience.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 5.8/10.[1319,1344,1346, etc.]

Open source
126. Protective Effect of Epigallocatechin-3-Gallate (EGCG) in Diseases with Uncontrolled Immune Activation: Could Such a Scenario Be Helpful to Counteract COVID-19?

PUBMED • 2020 • PubMed indexed study

PMID 32708322 from International journal of molecular sciences.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 5.7/10.[1319,1344,1346, etc.]

Open source
127. Liver injury from herbal and dietary supplements.

PUBMED • 2017 • PubMed indexed study

PMID 27677775 from Hepatology (Baltimore, Md.).

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 5.6/10.[1319,1344,1346, etc.]

Open source
128. Hepatotoxicity by Dietary Supplements: A Tabular Listing and Clinical Characteristics.

PUBMED • 2016 • PubMed indexed study

PMID 27070596 from International journal of molecular sciences.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 5.6/10.[1319,1344,1346, etc.]

Open source
129. Nutrition Supplements to Stimulate Lipolysis: A Review in Relation to Endurance Exercise Capacity.

PUBMED • 2016 • PubMed indexed study

PMID 27465721 from Journal of nutritional science and vitaminology.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 5.6/10.[1319,1344,1346, etc.]

Open source
130. New cancer treatment strategy using combination of green tea catechins and anticancer drugs.

PUBMED • 2011 • PubMed indexed study

PMID 21199169 from Cancer science.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 5.5/10.[1319,1344,1346, etc.]

Open source
131. Green tea extract and (-)-epigallocatechin-3-gallate, the major tea catechin, exert oxidant but lack antioxidant activities.

COHORT • 2005 • PubMed indexed study

PMID 15738004 from FASEB journal : official publication of the Federation of American Societies for Experimental Biology.

Outcome: Study design: COHORT. Quality score: 5.5/10.[1319,1344,1346, etc.]

Open source
132. Green tea (Camellia sinensis) extract does not alter cytochrome p450 3A4 or 2D6 activity in healthy volunteers.

COHORT • 2004 • PubMed indexed study

PMID 15319329 from Drug metabolism and disposition: the biological fate of chemicals.

Outcome: Study design: COHORT. Quality score: 5.5/10.[1319,1344,1346, etc.]

Open source
133. Evaluation of selected food supplements containing antioxidants.

COHORT • 2010 • PubMed indexed study

PMID 20839462 from Roczniki Panstwowego Zakladu Higieny.

Outcome: Study design: COHORT. Quality score: 5.5/10.[1319,1344,1346, etc.]

Open source
134. Comparative effects of EGCG, green tea and a nutrient mixture on the patterns of MMP-2 and MMP-9 expression in cancer cell lines.

COHORT • 2010 • PubMed indexed study

PMID 20664983 from Oncology reports.

Outcome: Study design: COHORT. Quality score: 5.5/10.[1319,1344,1346, etc.]

Open source
135. [Inhibitory effect of green tea infusion of hepatotoxicity].

PUBMED • 1998 • PubMed indexed study

PMID 10097515 from Kokuritsu Iyakuhin Shokuhin Eisei Kenkyujo hokoku = Bulletin of National Institute of Health Sciences.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 5.5/10.[1319,1344,1346, etc.]

Open source
136. Estimated Exposure to 6 Potentially Hepatotoxic Botanicals in US Adults.

PUBMED • 2024 • PubMed indexed study

PMID 39102266 from JAMA network open.

Outcome: Study design: OTHER. Quality score: 5.3/10.[1319,1344,1346, etc.]

Open source
137. Heukcha, naturally post-fermented green tea extract, ameliorates diet-induced hypercholesterolemia and NAFLD in hamster.

PUBMED • 2021 • PubMed indexed study

PMID 34642957 from Journal of food science.

Outcome: Study design: OTHER. Quality score: 5.2/10.[1319,1344,1346, etc.]

Open source
138. Hypoglycemic effect of soluble polysaccharide and catechins from green tea on inhibiting intestinal transport of glucose.

PUBMED • 2020 • PubMed indexed study

PMID 32342987 from Journal of the science of food and agriculture.

Outcome: Study design: OTHER. Quality score: 5.2/10.[1319,1344,1346, etc.]

Open source
139. The effects of green tea in the diet of broilers challenged with coccidiosis on their performance, carcass characteristics, intestinal mucosal morphology, blood constituents and ceca microflora.

PUBMED • 2022 • PubMed indexed study

PMID 36049150 from Veterinary medicine and science.

Outcome: Study design: OTHER. Quality score: 5.2/10.[1319,1344,1346, etc.]

Open source
140. Polyphenon E Effects on Gene Expression in PC-3 Prostate Cancer Cells.

PUBMED • 2022 • PubMed indexed study

PMID 36430806 from International journal of molecular sciences.

Outcome: Study design: OTHER. Quality score: 5.2/10.[1319,1344,1346, etc.]

Open source
141. The effect of green tea extract on fat oxidation at rest and during exercise: evidence of efficacy and proposed mechanisms.

PUBMED • 2013 • PubMed indexed study

PMID 23493529 from Advances in nutrition (Bethesda, Md.).

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 5.1/10.[1319,1344,1346, etc.]

Open source
142. Influence of Matcha and Tea Catechins on the Progression of Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD)-A Review of Patient Trials and Animal Studies.

PUBMED • 2025 • PubMed indexed study

PMID 40806117 from Nutrients.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 5.1/10.[1319,1344,1346, etc.]

Open source
143. Green tea supplementation upregulates uncoupling protein 3 expression in severe obese women adipose tissue but does not promote weight loss.

PUBMED • 2018 • PubMed indexed study

PMID 29482377 from International journal of food sciences and nutrition.

Outcome: Study design: OTHER. Quality score: 5.1/10.[1319,1344,1346, etc.]

Open source
144. The Peroxidation of Leukocytes Index Ratio Reveals the Prooxidant Effect of Green Tea Extract.

PUBMED • 2016 • PubMed indexed study

PMID 28101300 from Oxidative medicine and cellular longevity.

Outcome: Study design: OTHER. Quality score: 5.1/10.[1319,1344,1346, etc.]

Open source
145. Dietary Supplements for Weight Management: A Narrative Review of Safety and Metabolic Health Benefits.

PUBMED • 2022 • PubMed indexed study

PMID 35565754 from Nutrients.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 5.0/10.[1319,1344,1346, etc.]

Open source
146. Catechins in dietary supplements and hepatotoxicity.

PUBMED • 2013 • PubMed indexed study

PMID 23625293 from Digestive diseases and sciences.

Outcome: Study design: OTHER. Quality score: 5.0/10.[1319,1344,1346, etc.]

Open source
147. Green tea extract (Camellia sinensis) fermented by Lactobacillus fermentum attenuates alcohol-induced liver damage.

PUBMED • 2012 • PubMed indexed study

PMID 23221715 from Bioscience, biotechnology, and biochemistry.

Outcome: Study design: OTHER. Quality score: 5.0/10.[1319,1344,1346, etc.]

Open source
148. How does the flavan-3-ol structure condition the quali-quantitative production of phenolic metabolites? Insights from a 3-arm intervention.

PUBMED • 2025 • PubMed indexed study

PMID 40543124 from Food chemistry.

Outcome: Study design: OTHER. Quality score: 4.9/10.[1319,1344,1346, etc.]

Open source
149. Antioxidants for Skin Health.

PUBMED • 2025 • PubMed indexed study

PMID 39108105 from Recent advances in food, nutrition & agriculture.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.8/10.[1319,1344,1346, etc.]

Open source
150. Challenges in herbal-induced liver injury identification and prevention.

PUBMED • 2025 • PubMed indexed study

PMID 39136211 from Liver international : official journal of the International Association for the Study of the Liver.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.8/10.[1319,1344,1346, etc.]

Open source
151. Herbal and Non-Herbal Dietary Supplements for Psychiatric Indications: Considerations in Liver Transplantation.

PUBMED • 2024 • PubMed indexed study

PMID 38941032 from Current psychiatry reports.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.8/10.[1319,1344,1346, etc.]

Open source
152. Potentialities of Tannase-Treated Green Tea Extract in Nutraceutical and Therapeutic Applications.

PUBMED • 2024 • PubMed indexed study

PMID 38713339 from Applied biochemistry and biotechnology.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.8/10.[1319,1344,1346, etc.]

Open source
153. Oral interactions between a green tea flavanol extract and red wine anthocyanin extract using a new cell-based model: insights on the effect of different oral epithelia.

PUBMED • 2020 • PubMed indexed study

PMID 32724226 from Scientific reports.

Outcome: Study design: OTHER. Quality score: 4.8/10.[1319,1344,1346, etc.]

Open source
154. Single-cell transcriptomics reveals the natural product Shi-Bi-Man promotes hair regeneration by activating the FGF pathway in dermal papilla cells.

PUBMED • 2022 • PubMed indexed study

PMID 35777117 from Phytomedicine : international journal of phytotherapy and phytopharmacology.

Outcome: Study design: OTHER. Quality score: 4.8/10.[1319,1344,1346, etc.]

Open source
155. A network meta-analysis on the comparative effect of nutraceuticals on lipid profile in adults.

PUBMED • 2022 • PubMed indexed study

PMID 35988871 from Pharmacological research.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.7/10.[1319,1344,1346, etc.]

Open source
156. Dietary Epicatechin, A Novel Anti-aging Bioactive Small Molecule.

PUBMED • 2021 • PubMed indexed study

PMID 31886745 from Current medicinal chemistry.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.7/10.[1319,1344,1346, etc.]

Open source
157. The Effects of Green Tea Extract on Working Memory in Healthy Women.

PUBMED • 2018 • PubMed indexed study

PMID 29484360 from The journal of nutrition, health & aging.

Outcome: Study design: OTHER. Quality score: 4.7/10.[1319,1344,1346, etc.]

Open source
158. Risk of Liver Injury Associated with Green Tea Extract in SLIMQUICK(®) Weight Loss Products: Results from the DILIN Prospective Study.

PUBMED • 2016 • PubMed indexed study

PMID 27189593 from Drug safety.

Outcome: Study design: OTHER. Quality score: 4.7/10.[1319,1344,1346, etc.]

Open source
159. Common Herbal Dietary Supplement-Drug Interactions.

PUBMED • 2017 • PubMed indexed study

PMID 28762712 from American family physician.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
160. Botanicals and Hepatotoxicity.

PUBMED • 2018 • PubMed indexed study

PMID 29920648 from Clinical pharmacology and therapeutics.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
161. Safety assessment of green tea based beverages and dried green tea extracts as nutritional supplements.

PUBMED • 2017 • PubMed indexed study

PMID 28655517 from Toxicology letters.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
162. Liver toxicity related to herbs and dietary supplements: Online table of case reports. Part 2 of 5 series.

PUBMED • 2017 • PubMed indexed study

PMID 27402097 from Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
163. A literature review of flavonoids and lifespan in model organisms.

PUBMED • 2017 • PubMed indexed study

PMID 27609098 from The Proceedings of the Nutrition Society.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
164. Therapeutic Advances and Future Prospects in Progressive Forms of Multiple Sclerosis.

PUBMED • 2016 • PubMed indexed study

PMID 26729332 from Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
165. Chemoprevention of head and neck squamous cell carcinoma through inhibition of NF-κB signaling.

PUBMED • 2014 • PubMed indexed study

PMID 24177052 from Oral oncology.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
166. Nutraceuticals in lipid-lowering treatment: a narrative review on the role of chitosan.

PUBMED • 2015 • PubMed indexed study

PMID 25037700 from Angiology.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
167. The use of inexpensive broad spectrum lower toxicity therapeutics in chronic lymphocytic leukemia.

PUBMED • 2017 • PubMed indexed study

PMID 28534346 from Journal of B.U.ON. : official journal of the Balkan Union of Oncology.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
168. Synergistic enhancement of anticancer effects on numerous human cancer cell lines treated with the combination of EGCG, other green tea catechins, and anticancer compounds.

PUBMED • 2015 • PubMed indexed study

PMID 25544670 from Journal of cancer research and clinical oncology.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
169. Supplementation of Jurkat T cells with green tea extract decreases oxidative damage due to iron treatment.

PUBMED • 1999 • PubMed indexed study

PMID 10573539 from The Journal of nutrition.

Outcome: Study design: OTHER. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
170. Cancer prevention by green tea: evidence from epidemiologic studies.

PUBMED • 2013 • PubMed indexed study

PMID 24172305 from The American journal of clinical nutrition.

Outcome: Study design: OTHER. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
171. Anticarcinogenic activity of selenium-enriched green tea extracts in vivo.

PUBMED • 2007 • PubMed indexed study

PMID 17542612 from Journal of agricultural and food chemistry.

Outcome: Study design: OTHER. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
172. Tea catechin supplementation increases antioxidant capacity and prevents phospholipid hydroperoxidation in plasma of humans.

PUBMED • 1999 • PubMed indexed study

PMID 10552751 from Journal of agricultural and food chemistry.

Outcome: Study design: OTHER. Quality score: 4.6/10.[1319,1344,1346, etc.]

Open source
173. Green tea and prevention of esophageal and lung cancers.

PUBMED • 2011 • PubMed indexed study

PMID 21538848 from Molecular nutrition & food research.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
174. Green tea polyphenolic antioxidants and skin photoprotection (Review).

PUBMED • 2001 • PubMed indexed study

PMID 11351267 from International journal of oncology.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
175. The therapeutic potential of flavonoids.

PUBMED • 2000 • PubMed indexed study

PMID 11060796 from Expert opinion on investigational drugs.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
176. Tea and cancer prevention: epidemiological studies.

PUBMED • 2011 • PubMed indexed study

PMID 21419224 from Pharmacological research.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
177. Proposed mechanisms of (-)-epigallocatechin-3-gallate for anti-obesity.

PUBMED • 2007 • PubMed indexed study

PMID 17368440 from Chemico-biological interactions.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
178. The effects of green tea polyphenols on drug metabolism.

PUBMED • 2012 • PubMed indexed study

PMID 22509899 from Expert opinion on drug metabolism & toxicology.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
179. Medicinal benefits of green tea: part II. review of anticancer properties.

PUBMED • 2005 • PubMed indexed study

PMID 16131288 from Journal of alternative and complementary medicine (New York, N.Y.).

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
180. Complementary and alternative medicine (CAM) in prostate and bladder cancer.

PUBMED • 2013 • PubMed indexed study

PMID 23944379 from BJU international.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
181. Epigallocatechin-3-gallate (EGCG): chemical and biomedical perspectives.

PUBMED • 2006 • PubMed indexed study

PMID 16876833 from Phytochemistry.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
182. Induction of Apoptosis via Inactivating PI3K/AKT Pathway in Colorectal Cancer Cells Using Aged Chinese Hakka Stir-Fried Green Tea Extract.

PUBMED • 2022 • PubMed indexed study

PMID 36500365 from Molecules (Basel, Switzerland).

Outcome: Study design: OTHER. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
183. Investigating the Opposing Effect of Two Different Green Tea Supplements on Oxidative Stress, Mitochondrial Function and Cell Viability in HepG2 Cells.

PUBMED • 2022 • PubMed indexed study

PMID 33729080 from Journal of dietary supplements.

Outcome: Study design: OTHER. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
184. Nutrition strategies to improve physical capabilities in Duchenne muscular dystrophy.

PUBMED • 2012 • PubMed indexed study

PMID 22239883 from Physical medicine and rehabilitation clinics of North America.

Outcome: Study design: NARRATIVE_REVIEW. Quality score: 4.5/10.[1319,1344,1346, etc.]

Open source
185. Green tea extract enhances parieto-frontal connectivity during working memory processing.

PUBMED • 2014 • PubMed indexed study

PMID 24643507 from Psychopharmacology.

Outcome: Study design: OTHER. Quality score: 4.4/10.[1319,1344,1346, etc.]

Open source
186. Enhancement of bioaccessibility and modulation of green tea phenolic compounds through pre-transformation by Lactobacillus and Bifidobacterium strains.

PUBMED • 2025 • PubMed indexed study

PMID 40597549 from Food research international (Ottawa, Ont.).

Outcome: Study design: OTHER. Quality score: 4.3/10.[1319,1344,1346, etc.]

Open source
187. Investigating the Immune Basis of Green Tea Extract Induced Liver Injury in Healthy Donors Expressing HLA-B*35:01.

PUBMED • 2023 • PubMed indexed study

PMID 38055372 from Chemical research in toxicology.

Outcome: Study design: OTHER. Quality score: 4.3/10.[1319,1344,1346, etc.]

Open source
188. Green tea prepared via the daily infusion method prevents non-alcoholic fatty liver disease by targeting intestinal lipid absorption, hepatic lipid metabolism and gut microbiota composition.

PUBMED • 2025 • PubMed indexed study

PMID 41055146 from Food & function.

Outcome: Study design: OTHER. Quality score: 4.3/10.[1319,1344,1346, etc.]

Open source
189. Weight gain and psychiatric treatment: Is there a role for green tea and conjugated linoleic acid?

PUBMED • 2007 • PubMed indexed study

PMID 17477874 from Lipids in health and disease.

Outcome: Study design: OTHER. Quality score: 4.3/10.[1319,1344,1346, etc.]

Open source
190. Selenium-enriched green tea extracts: chemical constituents and effects on antioxidant and anti-inflammatory factors and four major intestinal flora in mice with intestinal disorders.

ANIMAL • 2025 • PubMed indexed study

PMID 40231393 from Journal of the science of food and agriculture.

Outcome: Study design: ANIMAL. Quality score: 4.3/10.[1319,1344,1346, etc.]

Open source
191. Citizens protein project: A self-funded, transparent, and concerning report on analysis of popular protein supplements sold in the Indian market.

PUBMED • 2024 • PubMed indexed study

PMID 38579036 from Medicine.

Outcome: Study design: OTHER. Quality score: 4.3/10.[1319,1344,1346, etc.]

Open source
192. Effect of Green Tea and Tea Catechin on the Visual Motion Processing for Optokinetic Responses in Mice.

ANIMAL • 2022 • PubMed indexed study

PMID 35987428 from Neuroscience.

Outcome: Study design: ANIMAL. Quality score: 4.2/10.[1319,1344,1346, etc.]

Open source
193. Usage of and attitudes about green tea extract and Epigallocathechin-3-gallate (EGCG) as a therapy in individuals with Down syndrome.

PUBMED • 2019 • PubMed indexed study

PMID 31331567 from Complementary therapies in medicine.

Outcome: Study design: OTHER. Quality score: 4.2/10.[1319,1344,1346, etc.]

Open source
194. Green tea intake and its effect on laboratory parameters and disease symptoms in hospitalised patients with Covid 19: a structured protocol for a randomized controlled trial.

PUBMED • 2021 • PubMed indexed study

PMID 34344427 from Trials.

Outcome: Study design: OTHER. Quality score: 4.2/10.[1319,1344,1346, etc.]

Open source
195. Green tea extract as a cryoprotectant additive to preserve the motility and DNA integrity of human spermatozoa.

PUBMED • 2021 • PubMed indexed study

PMID 33154201 from Asian journal of andrology.

Outcome: Study design: OTHER. Quality score: 4.2/10.[1319,1344,1346, etc.]

Open source
196. The effect of micronutrient supplementation on serum anti-Mullerian hormone levels: a retrospective pilot study.

PUBMED • 2022 • PubMed indexed study

PMID 35147056 from Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology.

Outcome: Study design: OTHER. Quality score: 4.2/10.[1319,1344,1346, etc.]

Open source
197. Inhibition of the facilitative sugar transporters (GLUTs) by tea extracts and catechins.

PUBMED • 2020 • PubMed indexed study

PMID 32564472 from FASEB journal : official publication of the Federation of American Societies for Experimental Biology.

Outcome: Study design: OTHER. Quality score: 4.2/10.[1319,1344,1346, etc.]

Open source
198. Application of Cryopreserved Human Intestinal Mucosa and Cryopreserved Human Enterocytes in the Evaluation of Herb-Drug Interactions: Evaluation of CYP3A Inhibitory Potential of Grapefruit Juice and Commercial Formulations of Twenty-Nine Herbal Supplements.

PUBMED • 2020 • PubMed indexed study

PMID 32719085 from Drug metabolism and disposition: the biological fate of chemicals.

Outcome: Study design: OTHER. Quality score: 4.2/10.[1319,1344,1346, etc.]

Open source
199. Effect of different tea extracts on the physicochemical and sensory parameters of stirred probiotic yoghurts.

PUBMED • 2019 • PubMed indexed study

PMID 31256546 from Acta scientiarum polonorum. Technologia alimentaria.

Outcome: Study design: OTHER. Quality score: 4.2/10.[1319,1344,1346, etc.]

Open source
200. Contrast-enhanced ultrasound for determining muscular perfusion after oral intake of L-citrulline, L-arginine, and galloylated epicatechines: A study protocol.

PUBMED • 2020 • PubMed indexed study

PMID 33031270 from Medicine.

Outcome: Study design: OTHER. Quality score: 4.2/10.[1319,1344,1346, etc.]

Open source
201. Liver Injury Associated with Sporting Activities.

PUBMED • 2018 • PubMed indexed study

PMID 30357773 from Seminars in liver disease.

Outcome: Study design: OTHER. Quality score: 4.1/10.[1319,1344,1346, etc.]

Open source
202. Patterns of Dietary Supplement Use in Children with Down Syndrome.

PUBMED • 2018 • PubMed indexed study

PMID 29961644 from The Journal of pediatrics.

Outcome: Study design: OTHER. Quality score: 4.1/10.[1319,1344,1346, etc.]

Open source
203. Green tea extract and its major constituent epigallocatechin-3-gallate inhibit growth and halitosis-related properties of Solobacterium moorei.

PUBMED • 2015 • PubMed indexed study

PMID 25880992 from BMC complementary and alternative medicine.

Outcome: Study design: OTHER. Quality score: 4.1/10.[1319,1344,1346, etc.]

Open source
204. Green tea extract supplementation does not hamper endurance-training adaptation but improves antioxidant capacity in sedentary men.

PUBMED • 2015 • PubMed indexed study

PMID 26319566 from Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme.

Outcome: Study design: OTHER. Quality score: 4.1/10.[1319,1344,1346, etc.]

Open source