Vitamin D is crucial for bone health and immunity, obtainable through sunlight and diet. Supplements, however, can lead to ...

"Many Americans are deficient in vitamin D due to limited sun exposure from indoor lifestyles, sunscreen use and our northern ...

How much vitamin D do we really need to preserve healthy bones and overall health? Do higher levels of vitamin D supplementation, as some studies suggest, reduce the risk of cardiovascular disease, ...

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

A data analysis of many clinical trials found negligible protective effect from vitamin D supplements against acute respiratory infections.

A Harvard study found that vitamin D supplements may help slow biological aging by protecting telomeres, the protective caps ...

Vitamin D is important for your health. But if you get too much of it from supplements, it could lead to a rare condition called vitamin D toxicity.

The best vitamin D supplement depends on a person's age, dietary needs, and their vitamin D levels. Learn more about 6 of the best vitamin D supplements.

For a 3-year-old child, the recommended daily dose of vitamin D is 400 IU. However, your child’s pediatrician may recommend a higher or lower dose depending on their individual needs.

Vitamin D supplements slowed the shortening of telomeres, according to a study published in The American Journal of Clinical Nutrition.