Researchers found that taking this vitamin every day may slow cellular aging by as much as three years. Here's everything you ...

Sounds dramatic, but when it comes to certain dietary supplements, even a slight overdose can send your ticker into chaos. We ...

Why vitamin D advice fails people with darker skin tones - melanin-rich skin has evolved different vitamin D metabolism ...

There are a total of 20 amino acids, 9 of which are essential, meaning the body cannot produce them adequately on its own and ...

A vitamin D deficiency, diagnosed with a blood test, often doesn’t cause symptoms, but some people with a severe case may experience fatigue, bone pain, and muscle weakness. Two kinds of ...