Vitamin D is vital for immunity, brain health, strong bones, and overall well-being, but taking in too much from supplements ...

Taking too much vitamin D can cause serious side effects. Learn the signs, why you might feel weird after taking it, and when to talk to your healthcare provider.

Vitamin D helps your body absorb calcium, supports bone health, and plays a role in immunity, muscle function, and more. While most people can get enough from sunlight, food, or supplements, some may ...

Dear Dr. Roach: These days, when vitamin D is recommended at every turn, I need to be sure I am taking the right dose. When I took 5,000 IU daily, my blood calcium levels increased and my doctor said ...

Dear Dr. Roach: Several years ago, in my early 80s, my gynecologist told me (like all women who mainly stayed indoors) that I should be taking 4,000 IU of vitamin D3 daily. Yet today, I read an ...

A landmark clinical trial presented at the 2025 AHA Scientific Sessions reveals that personalized supplementation may be the ...

Vitamin D deficiency is very common, especially during the winter months with less sunlight. Add these foods to your diet to help.

Millions of Americans rely on the "sunshine vitamin" for immunity and bone strength, but missing one crucial step regarding ...

A number of health authorities now acknowledge that vitamin D deficiency is a pervasive problem in the United States and the developed world. Sun deprivation, already a problem for inhabitants of ...

Various studies prove an association between severe vitamin D deficiency and bad COVID-19 outcomes. Other studies show Vitamin D plays a crucial role in immune function and inflammation. Recent data ...

Vitamin D deficiency impacts more than 1 billion people worldwide. Vitamin D deficiency can negatively affect a child’s growth, immune response, mental health, and more, which is why proper treatment ...

When you buy a carton of milk, you may notice that some brands state on the front of the label that they contain vitamin D. In reality, almost all pasteurized cow’s milk, as well as many brands of ...