If you have low vitamin D, the best way to make sure you are getting enough is to take a dietary supplement. Talk to your ...

Another key difference between the two forms of vitamin D is their source. “Vitamin D2 is usually produced by plants when exposed to sunlight,” Dr. Jiang says. Meanwhile, vitamin D3 is found in animal ...

When the sun is out, your body can potentially make its own vitamin D, but it still may make sense to continue with ...

Women between ages of 30 and 70 need about 600 international units, and once they're over 70, that number goes up to about ...

Both Vitamin D2 and D3 are inactive forms of Vitamin D. After you get Vitamin D from sunlight, food, or supplements, your body converts it into an active form called calcitriol.

Emerging evidence highlights the critical role of vitamin D3 in cellular aging and immune health, particularly through its potential to preserve leukocyte telomere length (LTL)—a biomarker of ...

MONDAY, June 2, 2025 (HealthDay News) -- Supplementation with vitamin D3 is associated with reduced telomere attrition in adults aged 50 years and older, according to a study published online May ...

If you’re vitamin D-deficient, taking a vitamin D3 supplement could offer potential benefits, experts say. But how often do you actually need to take it, and who should avoid it?

If you’re vitamin D-deficient, taking a vitamin D3 supplement could offer potential benefits, experts say. But how often do you actually need to take it, and who should avoid it?

Conducted as part of a nationwide four-year trial, the study tracked over 1,000 U.S. adults (men over 50 and women over 55) and found that daily vitamin D3 could reduce biological wear and tear ...

A 4-year VITAL trial shows that 2000 IU/day of vitamin D3 significantly reduces telomere shortening, offering promising anti-aging and cellular health benefits.

VITAL is a randomized, double-blind, placebo-controlled trial of vitamin D3 (2,000 IU/day) and omega-3 fatty acid (1 g/day) supplementation that tracked U.S. females aged 55 years and older and ...