Nature Made Vitamin D3 2000 IU (50 mcg), 400 Vitamin D Tablets | Vitamin D Supplement for Immune, Bone, Teeth and Muscle Health Support, 400 Day Supply
Helps slow biological aging of cells; In a clinical study, taking 2000 IU vitamin D3 supplements for 4 years helped prevent leukocyte telomere shortening, preventing the equivalent of approx 3 years of cellular aging compared with placebo in older adults
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