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
Kris Oddo, NASM-certified personal trainer, is the founder and head coach of Gains From Geebs (Geebs Coaching), a 1:1 online fitness coaching practice.
Quick answer
What this study found
If someone uses time-restricted eating, judge the schedule by whether it improves consistency without crowding out protein, training fuel, or normal life.
How strong is this kind of study?
- Reviews of many studies
- Controlled trialsThis study
- Observational
- Narrative reviews
Randomized controlled trial. Heavier plates are built from more studies, so they move less when the next one lands.
At a glance
What kind of study this is
Strong evidence
A controlled trial, where people were randomly assigned. That is the design that can actually show cause rather than coincidence.
- Design
- Randomized controlled trial
- Published
- 2024
- Journal
- Journal of Translational Medicine
- Reference
- PMID 39614235
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.
Ways to use it
Safe ways to apply it.
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
Related guides and studies
Keep learning about nutrition.
FAQ
Quick questions
What is the practical takeaway from this study?
If someone uses time-restricted eating, judge the schedule by whether it improves consistency without crowding out protein, training fuel, or normal life.
What does this study 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.
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