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17h ago

Vitamin D Supplements Found to Slow Cellular Aging by Preserving Telomeres

A new study shows that daily 2,000 IU doses of vitamin D over four years reduced telomere shortening, effectively preventing nearly three years of biological aging.

New research found that vitamin D supplements may play a role in slowing the biological aging process.
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Overview

  • The VITAL trial, involving over 1,000 adults aged 50 and older, demonstrated that daily vitamin D supplementation significantly slowed telomere shortening over four years.
  • Participants taking 2,000 IU of vitamin D3 daily experienced cellular aging equivalent to just one year, compared to nearly four years in the placebo group.
  • Telomeres, protective DNA caps linked to aging and diseases like cancer and Alzheimer’s, were preserved, marking a potential strategy to counter biological aging.
  • The parent VITAL study of 26,000 participants also linked vitamin D to reduced inflammation and lower risks of advanced cancers and autoimmune diseases.
  • Experts caution against excessive dosing due to potential toxicity and recommend vitamin D supplements primarily for high-risk groups, such as the elderly or those with limited sun exposure.