The Study
Influence of rapamycin on safety and healthspan metrics after one year: PEARL trial results
This study is like a fair test where people were randomly given either a real pill or a fake one, and no one knew who got which. It can show whether the pill probably caused changes, especially for safety. But because not many people were in the test, and only some groups (like women) showed benefits, we can’t be totally sure the results apply to everyone.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Scientists gave an anti-aging drug called rapamycin to older adults once a week for a year to see if it made them healthier and safer.
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 564 / 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.
- 1The results suggest the drug might help older adults, especially women, feel better and stay stronger, even if it doesn’t change fat levels.
- 2The drug didn’t reduce belly fat.
- 3But women taking 10 mg had more muscle and less pain.
- 4People taking 5 mg felt healthier overall.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Aging (Albany NY)
Year
2025
Authors
M. Moel, G. Harinath, V. Lee, A. Nyquist, Stefanie L. Morgan, Anar Isman, Sajad Zalzala
Related Content
Claims (6)
Taking rapamycin, even in small doses now and then, might increase the chance of getting serious infections like pneumonia in older people because it can weaken the immune system.
Taking a low weekly dose of a drug called rapamycin for a year might make older adults feel healthier overall, based on their own reports.
Taking a low weekly dose of a drug called rapamycin for a year might help older women build more lean muscle, which could slow down muscle loss as they age.
Taking a low weekly dose of a drug called rapamycin for a year might help reduce pain in healthy women over 50, based on how they reported feeling.
Taking rapamycin once a week for a year might be safe for healthy older adults, with no more side effects than a sugar pill — so it could be a candidate for slowing normal aging.
Taking low doses of a drug called rapamycin once a week doesn’t seem to reduce belly fat in healthy older adults after nearly a year, whether they take 5 mg or 10 mg — it’s about the same as taking a dummy pill.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.