New study reveals vitamin D supplements may reduce long COVID risk by 4%. Promising results for symptoms like fatigue and brain fog in clinical trial.

Learn what vitamin B6 does in your body, including benefits for brain health, energy, immunity, heart health. Plus, the best food sources of this essential nutrient.

I am confused about vitamin D. I have been taking it for years, along with calcium, to protect my bones. Recently, I read that there is no evidence it works and that too much could be harmful. Can you ...

A major clinical trial has delivered an unexpected twist in the search for ways to fight COVID-19 and its lingering effects. Researchers at Mass General Brigham found that taking high doses of vitamin ...