However, when you buy something through our retail links, Condé Nast may earn an affiliate commission.As far as nutrients go, vitamin D is one of the most widely useful—but oft-overlooked—things we ...

Watch: They are using blood biomarkers to lift performance, with the tests already making a difference to the way the team ...

This is a more unique symptom of riboflavin deficiency, leading to lesions at the corners of your mouth. “You may get scaling ...

Doctors and dietitians break down the biggest signs and symptoms of vitamin B2 deficiency. Plus, how much vitamin B2 you need in your diet and how to get it.

Being low on vitamin D can increase your risk of high blood pressure and diabetes, says Michael Holick, M.D., endocrinologist ...

Learn how vitamin D supplements may affect your blood pressure, who may benefit most, and how much to take safely—especially ...

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

Vitamin D supplements are generally in your system after 4 to 12 weeks. Learn more about the importance of consistent ...

It may sound ironic that people in a sun-drenched country like India need to be medically prescribed a dose of sunshine for ...

Many men run to get their testosterone checked, only to learn their symptoms are due to a different issue. This urologist ...

Vitamin deficiencies can often have a noticeable impact on our emotional well-being, leading to mood changes and cognitive issues. Three vitamins in particular—B-complex, D, and C—play a key role in ...

The foundation of good health is an optimal diet, but many people are unaware that they are deficient in important vitamins ...