Telomeres, those protective caps on the ends of your chromosomes, tell tales about your biological aging process. The unhealthier your lifestyle habits, the more premature damage occurs to them, leadi ...

NBC’s Dr. Natalie Azar and TODAY nutrition and health expert Joy Bauer break down the basics of vitamin D, including why it's important, how much you should get per day, natural sources, the health ...

Many medical and nutritional experts strongly support dietary supplements. But it's not all good news. Here's how to weigh the pros and cons.

Certain habits can make alopecia areata worse. Knowing what to avoid when you have alopecia areata may help prevent hair loss ...

The B vitamins, especially B12, are also important for people with diabetes. These vitamins help the body turn food into ...

Despite ample sunshine, a significant portion of Americans are vitamin D deficient, impacting immunity, mental health, and ...

Supplements such as curcumin, vitamin D, inositol, berberine, and chasteberry may help improve PCOS symptoms, especially when ...

BackgroundLow 25‐hydroxyvitamin D levels are associated with an increased risk of cardiovascular events, but the effect of vitamin D supplementation on markers of vascular function associated with ...

The Recommended Dietary Allowance (RDA) for vitamin C depends on a handful of factors, including age and sex (for adults): 19 ...

Doctors explain what prenatal vitamins are and if they have any benefits for people who aren't pregnant. Most prenatals ...

Many vegans meet their nutrient needs through a well-planned diet (and B12 supplements), but global data show that key ...