Peer-reviewed study
Longer daily fasting changed body composition in one short trial
Impact of daily fasting duration on body composition and cardiometabolic risk factors during a time-restricted eating protocol: a randomized controlled trial
Last updated 2026-07-21
Source details
PubMed-linked study details.
- Authors
- Sampieri et al.
- Journal
- Journal of Translational Medicine. 2024.
- Identifiers
- PMID 39614235 · DOI 10.1186/s12967-024-05849-6
Honest limits
What this study does not prove.
This short trial does not prove that one fasting duration is a universal threshold or that everyone should use a long daily fast.
Kris's practical takeaway
Here's what to do with it.
If someone uses time-restricted eating, judge the schedule by whether it improves consistency without crowding out protein, training fuel, or normal life.
What to remember
Three useful reminders.
A tighter window only helps if the day still works
Fasting duration is one variable, not the whole plan
One short trial cannot set a universal rule
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