🔬TODAY’S BREAKTHROUGH
A major human trial reveals that daily vitamin D supplementation helps preserve telomeres, the DNA “caps” that shorten with age, potentially slowing one key biological aging process.
The Discovery:
In a VITAL sub-study of 1,054 adults aged 50+, participants taking 2,000 IU/day of vitamin D₃ for four years experienced significantly reduced telomere attrition, about 140 base pairs less loss, equivalent to nearly three years of cellular aging.
The Science:
Telomeres protect chromosome ends and shorten with every cell division
Vitamin D₃ slowed shortening by approximately 0.035 kilobases per year
The effect held across all age groups and was independent of omega‑3 intake
Preserved telomeres support DNA stability, reduce inflammation, and promote cell longevity
Your Action:
Support telomere health through regular vitamin D₃ intake, via sunlight, fatty fish, or safe supplementation (up to 2,000 IU/day). Pair with daily movement, a Mediterranean-style diet, and maintaining metabolic balance.
Bottom Line:
Vitamin D₃ offers a simple, proven way to slow cellular aging by preserving your telomeres.
Source:
Vitamin D₃ and Marine Omega‑3 Fatty Acids Supplementation and Leukocyte Telomere Length: 4‑Year Findings from the VITAL Randomized Controlled Trial, American Journal of Clinical Nutrition, Haidong Zhu et al., VITAL Study Team, May 21, 2025
https://doi.org/10.1016/j.ajcnut.2025.05.003
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Disclaimer:
This newsletter is for informational purposes only and does not substitute professional medical advice. Always consult with a healthcare provider before making any changes to your health regimen.