Habit
High arousal and bright light late at night can delay sleep onset and reduce quality.[1907,2316,2356, etc.]
Superscript reference numbers link to the Sources bibliography.
Composite Rating
Blends evidence depth, community direction, safety friction, and completeness.
Evidence Intensity
100/100
High depth from human/RCT/meta counts
Community Direction
0
Mixed / Neutral • confidence Minimal
Safety Friction
100/100
High signal from adverse/interaction markers
Data Completeness
100%
Studies 24 • mentions 0 • links 35
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Classification: reduce.[1101,1231,1907, etc.]
Best fit: Users with bedtime procrastination and delayed sleep..[1101,1231,1907, etc.]
Goal alignment: Sleep, Mood, Energy, Focus.[1101,1231,1907, etc.]
Classification
Reduce
Evidence Tier
HIGH
Best Fit
Users with bedtime procrastination and delayed sleep.
Primary Focus
Sleep, Mood
Clinical Depth
Humans: 862 • RCTs: 34 • Meta: 13
Cohort / Real-World
Cohort signals: 178
Safety Markers
Adverse signals: 15 • Interactions: 0
Freshness, trend, and study timeline for this item
Status
Trend
↑ Growing evidence base
Depth
862 total studies · 8 recent
Timeline
Total indexed
862
Human studies
862
Sleep signals
827
Cohort signals
178
Neuropsych signals
173
Cardiometabolic signals
65
Weighted direction score: 0 (Mixed / Neutral)
High when replicated human meta-analysis/trial/cohort depth is present for the habit or exposure.
Total indexed
862
Human studies
862
Sleep signals
827
Cohort signals
178
Neuropsych signals
173
Cardiometabolic signals
65
Randomized trials
34
Dependency signals
22
Safety adverse signals
15
Meta-analyses
13
Animal-only studies
0
Distribution of evidence by study design strength
Evidence Strength: High
PMID 34530867 • 2021 Sep 16
Identifying effective intervention strategies to reduce children's screen time: a systematic review and meta-analysis.
The international journal of behavioral nutrition and physical activity
Open PubMedPMID 36071172 • 2022 Sep
Genome-wide association analyses of physical activity and sedentary behavior provide insights into underlying mechanisms and roles in disease prevention.
Nature genetics
Open PubMedPMID 31778942 • 2020 Feb
Associations of screen time, sedentary time and physical activity with sleep in under 5s: A systematic review and meta-analysis.
Benefit reports: 0
Adverse reports: 0
No-effect reports: 0
Mixed reports: 0
Unclear reports: 0
Signal confidence: 0.00
Benefits
Adverse
No Effect
Community confidence 0.00 with mentions: benefit 0, adverse 0, no-effect 0.
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aggregate • unclear
No directional first-hand mentions captured in the current community corpus; source links are retained for traceability.
Open mentionEvidence Sources
PUBMED • Human lifestyle/habit literature
Counts from structured habit/exposure PubMed query set.
Outcome: Humans 862, RCT 34, meta 13, cohort 178, sleep signals 827, cardiometabolic signals 65.[1907,2316,2356, etc.]
Open sourcePUBMED • 2021 • Human evidence curation set
PMID 34530867 from The international journal of behavioral nutrition and physical activity.
Outcome: See linked PubMed abstract for methods and outcomes.
No directional mention volume was resolved; fallback profile metadata is shown in other sections.
In vitro / tissue
0
Composite of study volume, RCTs, and meta-analyses
Sleep medicine reviews
PMID 33036443 • 2020 Oct 7
The Relationships between Screen Use and Health Indicators among Infants, Toddlers, and Preschoolers: A Meta-Analysis and Systematic Review.
International journal of environmental research and public health
Open PubMedPMID 35066216 • 2022 Jul
Prevalence of meeting 24-Hour Movement Guidelines from pre-school to adolescence: A systematic review and meta-analysis including 387,437 participants and 23 countries.
Journal of sport and health science
Open PubMedPMID 36075490 • 2022 Nov
Parent-based interventions to improve multiple lifestyle risk behaviors among adolescents: A systematic review and meta-analysis.
Preventive medicine
Open PubMedPMID 36615807 • 2022 Dec 28
Unhealthy Lifestyles and Retinal Vessel Calibers among Children and Adolescents: A Systematic Review and Meta-Analysis.
Nutrients
Open PubMedPMID 40412510 • 2025 Sep
Exploring the interplay of genetic variants and environmental factors in childhood obesity: A systematic review and meta-analysis.
Metabolism: clinical and experimental
Open PubMedPMID 40170130 • 2025 Apr 1
Association of physical activity, sedentary behaviour, sleep and myopia in children and adolescents: a systematic review and dose-response meta-analysis.
BMC public health
Open PubMedPMID 33323269 • 2019 Sep
Effectiveness of school-based eHealth interventions to prevent multiple lifestyle risk behaviours among adolescents: a systematic review and meta-analysis.
The Lancet. Digital health
Open PubMedPMID 32046735 • 2020 Feb 11
Identification and evaluation of risk of generalizability biases in pilot versus efficacy/effectiveness trials: a systematic review and meta-analysis.
The international journal of behavioral nutrition and physical activity
Open PubMedPMID 38514296 • 2024 Jul
Prevalence of meeting 24-hour movement guidelines and its associations with health indicators in people with disabilities: A systematic review and meta-analysis.
Disability and health journal
Open PubMedPMID 38194951 • 2024 Apr 1
Associations Between Changes in 24-Hour Movement Behaviors in Children and Adolescents During the COVID-19 Pandemic: A Systematic Review and Mediation-Based Meta-Analysis.
Journal of physical activity & health
Open PubMedPMID 35604678 • 2022 Aug 1
Effects of Limiting Recreational Screen Media Use on Physical Activity and Sleep in Families With Children: A Cluster Randomized Clinical Trial.
JAMA pediatrics
Open PubMedPMID 37480007 • 2023 Jul 21
The short and long-term effects of a lifestyle intervention in children with mental illnesses: a randomized controlled trial (Movementss study).
BMC psychiatry
Open PubMedPMID 40081281 • 2025 May
A randomised pilot trial for bedtime procrastination: Examining the efficacy and feasibility of the Reducing Evening Screen Time online intervention (REST-O).
Sleep medicine
Open PubMedPMID 40524171 • 2025 Jun 16
Six-month intervention effect of a digital movement behavior intervention on parent- and child intermediary outcomes-results from the Let's Grow randomized controlled trial.
The international journal of behavioral nutrition and physical activity
Open PubMedPMID 39821586 • 2025 Mar
Long-term follow-up of the impact of brief sleep and lifestyle interventions in infancy on BMI z-score at 11 years of age: The POI randomized controlled trial.
Pediatric obesity
Open PubMedPMID 27417980 • 2016 Jul
Design and rationale of the STRIVE trial to improve cardiometabolic health among children and families.
Contemporary clinical trials
Open PubMedPMID 37211275 • 2023 Sep-Oct
A Multimethod Evaluation of the Futuros Fuertes Intervention to Promote Healthy Feeding, Screen Time, and Sleep Practices.
Academic pediatrics
Open PubMedPMID 33902326 • 2021 Sep
Weight-Related Behaviors of Children with Obesity during the COVID-19 Pandemic.
Childhood obesity (Print)
Open PubMedPMID 36631869 • 2023 Jan 11
Evaluation of a cluster-randomized controlled trial: Communities for Healthy Living, family-centered obesity prevention program for Head Start parents and children.
The international journal of behavioral nutrition and physical activity
Open PubMedPMID 25625810 • 2015 Mar
Design and protocol of a randomized multiple behavior change trial: Make Better Choices 2 (MBC2).
Contemporary clinical trials
Open PubMedPMID 38000452 • 2024 Jan
StandUPTV: Preparation and optimization phases of a mHealth intervention to reduce sedentary screen time in adults.
Contemporary clinical trials
Open PubMedFallback search fetch failed: Failed to fetch after retries: https://old.reddit.com/search.json?raw_json=1&sort=relevance&t=year&limit=12&q=late%20night%20screen%20time
Community Sources
PUBMED • 2020 • Human evidence curation set
PMID 31778942 from Sleep medicine reviews.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2022 • Human evidence curation set
PMID 36071172 from Nature genetics.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2020 • Human evidence curation set
PMID 33036443 from International journal of environmental research and public health.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2022 • Human evidence curation set
PMID 35066216 from Journal of sport and health science.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2022 • Human evidence curation set
PMID 36075490 from Preventive medicine.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2022 • Human evidence curation set
PMID 36615807 from Nutrients.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2025 • Human evidence curation set
PMID 40412510 from Metabolism: clinical and experimental.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2025 • Human evidence curation set
PMID 40170130 from BMC public health.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2019 • Human evidence curation set
PMID 33323269 from The Lancet. Digital health.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2020 • Human evidence curation set
PMID 32046735 from The international journal of behavioral nutrition and physical activity.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2024 • Human evidence curation set
PMID 38514296 from Disability and health journal.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2024 • Human evidence curation set
PMID 38194951 from Journal of physical activity & health.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2022 • Human evidence curation set
PMID 35604678 from JAMA pediatrics.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2023 • Human evidence curation set
PMID 37480007 from BMC psychiatry.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2025 • Human evidence curation set
PMID 40081281 from Sleep medicine.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2025 • Human evidence curation set
PMID 40524171 from The international journal of behavioral nutrition and physical activity.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2025 • Human evidence curation set
PMID 39821586 from Pediatric obesity.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2016 • Human evidence curation set
PMID 27417980 from Contemporary clinical trials.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2023 • Human evidence curation set
PMID 37211275 from Academic pediatrics.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2021 • Human evidence curation set
PMID 33902326 from Childhood obesity (Print).
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2023 • Human evidence curation set
PMID 36631869 from The international journal of behavioral nutrition and physical activity.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2015 • Human evidence curation set
PMID 25625810 from Contemporary clinical trials.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open sourcePUBMED • 2024 • Human evidence curation set
PMID 38000452 from Contemporary clinical trials.
Outcome: See linked PubMed abstract for methods and outcomes.[1907,2316,2356, etc.]
Open source