Science for a Healthier Tomorrow
Does a shorter eating window work better? Early pooled data say maybe — weakly
Preliminary pooled analysis: more weight loss on an 8-hour eating window — but the 8h arm had 11 people, and the dose-response faded on adjustment.
What this means
Early and mixed. This pooled analysis hints that eating-window length matters for weight, but the dose-response the authors report loses statistical significance after adjustment, and the 8-hour comparisons rest on 11 people. No cardiometabolic benefit appeared. On these data alone, no window length is established as the better choice.
Body
Preliminary evidence from a new pooled analysis suggests shorter eating windows may aid weight loss — but the signal is fragile, and the authors’ own numbers show it weakening under statistical adjustment.
The analysis, published September 12 in Nutrition & Diabetes, pools individual data from five time-restricted eating (TRE) trials: 124 adults (two-thirds women; mean age 47) followed 3–6 months, with eating windows measured by timestamped app logging. People allocated an 8-hour window lost 1.66 kg (about 3.7 lb) more weight than those on a 12-hour window (95% CI 0.22–3.10; p=0.02) and 2.25 kg (about 5.0 lb) more than control participants (95% CI 0.84–3.66; p=0.002).
Three cautions temper that result. The 8-hour arm had only 11 people, and the 8h-vs-10h comparison was not statistically significant (p=0.09). The per-hour dose-response — 0.27 kg (about 0.6 lb) more loss per hour of shorter window before adjustment — attenuated to null after adjustment for age, sex and BMI (0.21 kg [about 0.5 lb], 95% CI −0.04 to 0.47; p=0.10), though the authors note the between-window associations generally persisted after adjustment, “potentially due to the limited sample size.” And blood pressure, fasting glucose, and cholesterol showed no significant change in either direction.
Baseline weight also differed sharply between arms (8h: 94.8 kg (about 209 lb) vs 12h: 79.6 kg (about 175 lb); p<0.001), which adjustment only partly addresses. This analysis rests on the paper's abstract and supplement tables; the full text — trial-level methods and attrition included — was not accessible. The study is not yet indexed in PubMed.
Sources
- Papageorgiou M, Chow LS, Laferrère B, Manoogian ENC, Taub PR, Woźniak A, Świątkiewicz I, Panda S, Collet T-H. “A shorter eating window of time-restricted eating is more beneficial for weight loss: a pooled analysis of individual data from five trials.” Nutrition & Diabetes (Nature), published 2026-09-12. https://www.nature.com/articles/s41387-026-00467-1 · DOI: 10.1038/s41387-026-00467-1 · PMID: none yet (verified not PubMed-indexed as of 2026-09-25)
Funding/COI (from the paper, as recorded in the packet): public and foundation sources (NIH/NCATS/NIA, Swiss NSF, Swiss and Leenaards/Vontobel foundations); open-access funding University of Geneva. One author (L.S.C.) reported an investigator-initiated grant from Dexcom (device only). No food-industry funding disclosed.
