Timed feeding linked to aligned daily gene activity in mice
Nearly four times as many mitochondrial-related gene readouts aligned across tissues with timed feeding as with unrestricted food access.
Our read
Interventions- Studied:
- Computational study of adult male C57BL/6J mice, seven weeks, against unrestricted feeding
- What changed:
- Coordinated gene readouts rose from 23 with unrestricted feeding to 89 with timed feeding
- The catch:
- The source dataset included only two animals per sampling time
- In the record:
- One of 539 papers on time-restricted feeding on record: 168 with results in people, 116 in animals.
- Why it’s aging research:
- An intervention with evidence on lifespan or healthspan.
Editor of record: Boris Djordjevic · AgingResearch.News
In adult male C57BL/6J mice, a computational analysis linked a nine-hour daily feeding window to closer alignment of gene activity across 22 tissues. Researchers reanalyzed existing data from mice given either unrestricted food access or access within that window during the dark phase for seven weeks. Tissues had been collected every two hours over 24 hours.
The analysis tracked RNA readouts from genes encoding proteins associated with mitochondria, cell structures involved in energy metabolism. The number of readouts meeting the researchers’ threshold for coordination across tissues rose from 23 with unrestricted feeding to 89 with timed feeding. Coordination within individual tissues did not increase overall.
Why it matters
Daily metabolic rhythms help coordinate organs with the day-night cycle. Whether coordination of mitochondrial-related gene activity matters for healthy aging remains a question for future research.
Caveats
Correlations between RNA patterns do not show that mitochondria worked better or that lifespan changed. The source dataset included only adult male mice, with two animals per sampling time.
- Time-restricted feeding
- Circadian clock
- Mitochondrion
- Coq10b expression
- Mitochondrial-associated transcript expression
- Mice
Time-restricted feeding is part of Bryan Johnson's Blueprint
The paper
University of California, Los Angeles
iScience, May 15, 2026, Open access
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