Trial reportObesity facts2013
Bright light for weight loss: results of a controlled crossover trial.
Trial report in Obesity facts, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
23 citing papers in PubMed, 60 citations in OpenAlex.
- Acute Effects of Morning Light on Plasma Glucose and Triglycerides in Healthy Men and Men with Type 2 Diabetes.Journal of biological rhythms · 2017Trial
- Trial
- Higher Daytime Light Exposure Predicts Lower Risk of Gastrointestinal Cancer Incidence and Mortality.International journal of cancer · 2026Article
- Diurnal Light Exposure and Rest-Activity Rhythms in Relation to MASLD: Insights From 2 Nationwide Cohort Studies.The Journal of clinical endocrinology and metabolism · 2026Article
- Bright light exposure suppresses feeding and weight gain via a visual circuit linked to the lateral hypothalamus.Nature neuroscience · 2026Article
- Investigation of effects of different colour led lighting application to pregnant rats on mother and offspring.Revista da Escola de Enfermagem da U S P · 2025Article
- Blue Light and Temperature Actigraphy Measures Predicting Metabolic Health Are Linked to Melatonin Receptor Polymorphism.Biology · 2023Article
- Alignment Between 24-h Light-Dark and Activity-Rest Rhythms Is Associated With Diabetes and Glucose Metabolism in a Nationally Representative Sample of American Adults.Diabetes care · 2023Article
- The Role of the Circadian Rhythm in Dyslipidaemia and Vascular Inflammation Leading to Atherosclerosis.International journal of molecular sciences · 2023Review
- The role of daylight exposure on body mass in male mice.Physiology & behavior · 2023Article
- Light-emitting diode (LED) photobiomodulation regulates thermogenesis and lipogenesis markers in adipose tissue and improves anthropometric and metabolic parameters in obese mice.Lasers in medical science · 2023Article
- The Complex Effects of Light on Metabolism in Humans.Nutrients · 2023Review
- Evening blue-light exposure, maternal glucose, and infant birthweight.Annals of the New York Academy of Sciences · 2022Article
- Relationship Between Circadian Strain, Light Exposure, and Body Mass Index in Rural and Urban Quilombola Communities.Frontiers in physiology · 2021Article
- Beneficial effects of daytime high-intensity light exposure on daily rhythms, metabolic state and affect.Scientific reports · 2020Article
- The Role of Daylight for Humans: Gaps in Current Knowledge.Clocks & sleep · 2020Article
- More evening preference is positively associated with systemic inflammation in prediabetes and type 2 diabetes patients.Scientific reports · 2018Article
- Circadian Health and Light: A Report on the National Heart, Lung, and Blood Institute's Workshop.Journal of biological rhythms · 2018Article
- Circadian regulation of glucose, lipid, and energy metabolism in humans.Metabolism: clinical and experimental · 2018Review
- A systematic review and narrative synthesis of interventions for uncomplicated obesity: weight loss, well-being and impact on eating disorders.Journal of eating disorders · 2017Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo investigate whether bright light treatment can reduce body mass in overweight subjects irrespective of their seasonal (= light) dependence.
methodsA crossover, placebo-controlled, randomized clinical trial was performed between November and April in Novosibirsk, Russia (55° N). The trial comprised a 3-week in-home session of morning bright light treatment using a device of light-emitting diodes and a 3-week placebo session by means of a deactivated ion generator, separated by an off-protocol period of at least 23 days. The number of placebo and light sessions was matched with respect to season. Data were obtained from 34 overweight women, aged 20-54 years, 10 were seasonal-dependent according to the Seasonal Pattern Assessment Questionnaire. Weekly measures included body weight, percentage body fat by bioimpedancemetry, and subjective scores (appetite, mood, energy levels).
resultsMotivation and expectation towards weight loss were similar for the two intervention sessions. With light, compared to the placebo session, weight did not reduce significantly, but percentage fat, fat mass, and appetite were significantly lower (average fat reduction 0.35 kg). The latter two results remained significant after excluding seasonal-dependent subjects from the analysis. Irrespective of the type of intervention, seasonal-dependent subjects had greater weight and fat mass changes during treatment (decline p < 0.036) or between sessions (regain p < 0.003). Photoperiod (p = 0.0041), air temperature to a lesser extent (p = 0.012), but not sunshine (p = 0.29) was associated with the weight change (greater weight reduction if the second session was in spring).
conclusionMorning bright light treatment reduces body fat and appetite in overweight women and may be included in weight control programs.
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What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.