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Vitamin D Boosts Telomere Health, Study Reveals

10/23/2025

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Summary

Story summary

A recent review finds 2,000 International Units (IU) daily of vitamin D may help preserve telomeres, which protect chromosomes.
In a five-year study of 1,031 adults, those on vitamin D fared better than placebo.
Vitamin D is known to support bone health and the immune system.
Experts caution that diet and lifestyle remain essential, and people should consult a physician before starting supplements.

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Story summary

A recent review finds 2,000 International Units (IU) daily of vitamin D may help preserve telomeres, which protect chromosomes.
In a five-year study of 1,031 adults, those on vitamin D fared better than placebo.
Vitamin D is known to support bone health and the immune system.
Experts caution that diet and lifestyle remain essential, and people should consult a physician before starting supplements.