The Study
Rapamycin does not compromise physical performance or muscle hypertrophy after PoWeR while intermittent rapamycin alleviates glucose disruptions by frequent rapamycin
This study watched different groups of female mice to see what happened when they exercised and took rapamycin in different ways. It can show that some things happened together, like mice on frequent rapamycin having worse blood sugar, but it can't prove that the drug caused it for sure.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Scientists gave mice a drug called rapamycin either once a week or three times a week while they ran on special wheels. They wanted to see if the drug helped or hurt their muscles and health.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 59 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1This suggests that taking rapamycin less often might let people get the anti-aging benefits without blocking the good effects of exercise.
- 2Mice on both schedules got stronger and improved fitness.
- 3But the ones getting rapamycin three times a week had worse blood sugar control and didn't lose fat like the others.
- 4Mice on once-weekly dosing ran more and had better sugar levels.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
bioRxiv
Year
2025
Authors
Christian J. Elliehausen, Szczepan S Olszewski, Carolyn G Shult, Aditya R. Ailiani, Michaela E Trautman, Reji Babygirija, Dudley Lamming, Troy A. Hornberger, D. Minton, Adam R. Konopka
Related Content
Claims (7)
Taking rapamycin between workouts might help your muscles clean out junk and rebuild stronger as you age — like getting the best of both rest and exercise.
In female mice that run with added weight, giving rapamycin three times a week blocks a key muscle growth signal, but giving it just once a week doesn’t keep that block going — so how often you dose matters.
In female mice that run with added weight, taking a drug called rapamycin makes it harder for their bodies to handle sugar — but doing it less often doesn't hurt as much, so spacing out doses might help reduce the downside.
In female mice that exercised a lot for 8 weeks, taking rapamycin — a drug that affects aging — either once a week or three times a week didn’t stop them from getting stronger or improving their stamina.
In female mice that run a lot, taking rapamycin frequently stops them from losing fat — even though exercise usually helps them slim down.
Giving female mice a certain drug (rapamycin) once a week helps them run more on their own compared to giving it more often or not at all.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.