# Time-restricted eating

Time-restricted eating (TRE) confines your daily food intake to a consistent window, typically 6 to 10 hours. That leaves 14 to 18 hours of fasting. The concept came from Satchin Panda's circadian-biology lab at the Salk Institute. Some trials report better insulin sensitivity, lipids, and blood pressure, even without cutting calories. Others disagree. Liu et al. (NEJM 2022) found that TRE plus calorie restriction was no better than calorie restriction alone, for weight or metabolic outcomes. Eating in an earlier window may be preferable, but the evidence is still preliminary.

## Sources

- Liu D, Huang Y, Huang C, Yang S, Wei X, Zhang P, et al.. (2022). Calorie Restriction with or without Time-Restricted Eating in Weight Loss. New England Journal of Medicine. https://doi.org/10.1056/NEJMoa2114833

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_Canonical: https://longevity-switzerland.com/en/glossary/time-restricted-eating · Part of Longevity Cities · Updated 2026-06-22_