Vitamin D Shown to Protect Aging Cells, Study Suggests

New study reveals vitamin D may slow aging by protecting telomeres, boosting immune health and reducing disease risk.

October 3, 2026 One Min Read

POLICY WIRE — City, Country — A new study suggests that vitamin D could play a key role in maintaining cellular health as people age, potentially offering protection against chronic diseases.

The research, conducted at Augusta University, followed 1,031 participants aged 65 on average over five years. Those taking 2,000 IU of vitamin D daily showed a measurable preservation of telomeres, the protective caps on chromosomes that shorten with each cell division.

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Scientists have linked shorter telomeres to conditions like cancer, heart disease, and osteoarthritis. The study found that vitamin D supplements helped maintain telomere length by 140 base pairs compared to a placebo, which could have significant implications for healthy aging. However, experts caution that more research is needed to determine optimal dosages and long-term effects.

Reporting by Policy-Wire (PW)

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