VITAL Trial 2025
Vitamin D3 May Slow Biological Aging
VITAL Trial 2025 - 4-Year Study on Aging
What Was Studied
Scientists followed participants for 4 years to see how vitamin D3 supplements affect cellular aging by measuring telomeres (protective caps on chromosomes that shorten as we age).
Key Findings
Vitamin D3 supplementation reduced telomere shortening by 0.14 kb over 4 years
This reduction is equivalent to delaying biological aging by approximately 3 years
The anti-aging effect was specifically from vitamin D3, not omega-3 supplements
Benefits were consistent across different participant groups
Why It Matters
This study provides evidence that maintaining adequate vitamin D levels (often through sun exposure) might help slow down the aging process at the cellular level, potentially contributing to healthier aging and longevity.