# Metformin's Anti-Aging Case: Strong Clues but Still No Proof

- **Evidence Level**: Moderate
- **Journal**: Molecular and cellular endocrinology
- **Sample Size**: N/A
- **Published**: 2026-04-04
- **Topics**: metformin, aging, longevity
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/41942023/

## Summary

This review pulls together lab, population, and clinical trial evidence on metformin as a potential aging-slowing drug. At normal doses, metformin seems to flip several key aging switches: boosting cellular cleanup, calming inflammation, and improving energy production. Large population studies link metformin use to lower rates of age-related diseases, even in people without diabetes. However, the review honestly notes that metformin may actually worsen aging in older animals, so the picture is still mixed.

## Practical Takeaway

This review suggests metformin shows promise against aging but its effects may differ by age.

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_Canonical: https://longevity-germany.com/en/research/metformin-s-anti-aging-case-strong-clues-but-still-no-proof · Part of Longevity Cities · Updated 2026-04-04_