The Study
Effects of early, late and self-selected time-restricted eating on visceral adipose tissue and cardiometabolic health in participants with overweight or obesity: a randomized controlled trial
This study is like a fair test where people were randomly picked to eat at different times or just follow diet advice. It found that eating at different times didn’t help reduce belly fat more than just eating healthy. So we can say TRE didn’t add extra help—but we can’t say it makes you healthier or causes weight loss.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Scientists tested if eating only during an 8-hour window each day — whether morning, evening, or anytime you choose — helps people lose belly fat better than just eating healthy Mediterranean food.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 570 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Even though people stuck to the eating schedule well and had no serious side effects, the 8-hour window didn't give them any extra health benefits beyond eating healthy food.
- 2People who ate within an 8-hour window lost almost no extra belly fat compared to those who just ate healthy food.
- 3Their blood sugar didn't improve, and they lost only a tiny bit of weight — not enough to matter.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Nature Medicine
Year
2025
Authors
M. Dote-Montero, A. Clavero-Jimeno, E. Merchan-Ramirez, M. Osés, J. Echarte, A. Camacho-Cardenosa, M. Concepción, F. Amaro-Gahete, Juan M. A. Alcántara, A. López-Vázquez, R. Cupeiro, J. Migueles, A. De-la-O, P. V. García Pérez, Victoria Contreras-Bolívar, A. Muñoz-Garach, A. Zugasti, E. Petrina, Natalia Álvarez de Eulate, E. Goñi, C. Armendariz-Brugos, M. T. González Cejudo, J. L. Martín-Rodríguez, F. Idoate, R. Cabeza, Almudena Carneiro-Barrera, R. de Cabo, M. Muñoz-Torres, I. Labayen, J. Ruiz
Related Content
Claims (6)
Eating all meals within a daily time window improves metabolic function and gut health, even when total calories consumed remain unchanged.
In adults with overweight or obesity, following time-restricted eating along with Mediterranean diet education for 12 weeks does not produce weight loss that is meaningful in a clinical setting, based on secondary analyses showing only small reductions not corrected for statistical testing multiple times.
In adults with overweight or obesity, adding an 8-hour time-restricted eating window to a Mediterranean diet education program does not reduce visceral fat volume after 12 weeks compared to the diet education program alone.
Adults with overweight or obesity who eat within an 8-hour window each day for 12 weeks do not experience serious side effects and maintain high adherence rates of 85–88%, indicating this eating pattern is feasible without major safety issues.
In adults with overweight or obesity, eating meals at different times of day during time-restricted eating does not change the amount of visceral fat lost over 12 weeks, and aligning meals with the body's natural rhythm does not improve fat loss beyond what is achieved by eating fewer calories or choosing healthier foods.
In adults with overweight or obesity, following a time-restricted eating schedule for 12 weeks does not result in a measurable improvement in average daily blood glucose levels compared to receiving education about the Mediterranean diet.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.