Daily vitamin D3 supplements slow telomere shortening in older adults by 25% over four years, potentially reducing the risk of age-related diseases and premature death.
“Researchers recruited 1,031 participants from the large VITAL trial who took vitamin D3 (2,000 IU daily), omega-3 fatty acids (1 gram daily), both, or a placebo for four years. The researchers measured each person's telomere length at the start of the study, then again two and four years later.”