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Journal ArticleCell stem cell·Jul 2026

Vitamin C May Slow Bone Marrow Aging, Turning Back the Cellular Clock in Monkeys

Key Insight

This study suggests vitamin C may support the cells that keep your immune system young.


Long-term vitamin C given to monkeys helped keep their bone marrow younger, the factory that makes blood and immune cells. The supplement rebuilt a pool of cells that normally shrinks with age. By two different aging clocks, the treated marrow looked about 4 years younger. This is early animal work, but it hints at why vitamin C matters for a healthy immune system.

Conflict of Interest Disclosure: One author works for Altos Labs, a longevity company, and another sits on the journal's advisory board.

Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.