Overview
- A DIfE–Charité study published in Science Translational Medicine tested early (8–16) versus late (13–21) eating windows with identical calories and nutrients in 31 women, finding no changes in blood glucose, insulin action, blood lipids or inflammatory markers.
- Meal timing shifted circadian phase by roughly 40 minutes and altered sleep schedules, measured with a Charité-developed blood test that tracks the body’s internal clock.
- The authors conclude prior reported benefits likely stemmed from unintended calorie reduction, as participants lost only small amounts of weight corresponding to an average daily deficit of about 170 kilocalories.
- Therapeutic fasting such as the Buchinger method focuses on short, supervised periods without solid food for regeneration rather than weight loss, with health insurers advising medical guidance for novices and people with preexisting conditions.
- Mouse experiments hint at autophagy and lifespan effects under restricted feeding, yet age-dependent results and uncertain translation to humans limit the claims.