Limiting eating hours offers no extra weight loss benefit over calorie restriction
In short: A randomized trial of 139 adults with obesity found that time-restricted eating—limiting food intake to a specific window—was not more effective for weight loss than daily calorie restriction alone. While one group ate only between 8:00 a.m. and 4:00 p.m., both groups followed a reduced-calorie diet for one year.
The study investigated whether the timing of meals provides metabolic advantages beyond simple calorie reduction. Researchers observed that while both groups lost weight, there was no significant difference in changes to body mass, waist circumference, or body fat between the two regimens.
This 12-month controlled experiment followed 118 participants to completion. However, the findings are limited to this specific calorie-restricted framework and do not establish long-term safety or efficacy for other eating windows.
Why it matters: Restricting when you eat may not be more effective for weight loss than simply managing total calories.
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Sources
- Summary by Intellect · source: Research: Liu et al. (2022). Calorie Restriction with or without Time-Restricted Eating in Weight Loss. New England Journal of Medicine.
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