A clinical trial suggests vitamin D may slow cellular aging by preserving telomeres. Researchers urge caution on dosing and emphasize lifestyle as the most reliable path to healthy aging. Vitamin D su ...

Although these findings are exciting, it’s too early to start popping high-dose vitamin D in the hope of slowing aging. The strongest evidence for healthy aging still points to the basics: a balanced ...

In a recent narrative review published in Nutrients, researchers discuss the evidence arguing for the efficiency and safety of 2000 international units (IU), i.e., 50 micrograms (µg) of vitamin D ...

We updated this article in November 2022 to add more information about each featured product, based on extensive research done by our team. Most experts agree that it’s best to get your vitamins and ...

Ritual is a vitamin subscription service. It sells products with simple, traceable ingredients, including this multivitamin designed for women ages 18 and over. Each serving contains 50 mcg (2,000 IU) ...

Breastfed infants and children with certain medical conditions are also susceptible to vitamin D deficiency. If a healthcare professional has recommended a vitamin D supplement for calcium absorption, ...

People age 50 and older taking 2,000 IU (International Units) of vitamin D3 for over five years had a 22% lower relative rate of confirmed autoimmune diagnoses, said study author Dr. Karen Costenbader ...

What is vitamin D3? Your body creates this vitamin naturally when exposed to sunlight. In the winter, however, we tend to stay inside more, making it harder to get the proper amount of D3. There are a ...

A new Harvard study reveals that a common supplement has been shown to slow down the ageing process. The study published in The American Journal of Clinical Nutrition revealed that daily consumption ...

Historically, 400 IU (10 ug) of vitamin D was recommended for better health because it closely approximated the amount of vitamin D in a teaspoonful of cod liver oil. However, 800 to 1,000 IU is the ...

Like other vitamins, vitamin D is a substance needed for health but only in tiny amounts. Unlike other vitamins, it doesn't occur naturally in many foods (except seafood, mushrooms, and egg yolks), ...