When the sun is out, your body can potentially make its own vitamin D, but it still may make sense to continue with ...

Many people may have low vitamin D levels. Experts say this is a common issue. It can cause fatigue and muscle weakness. A ...

Women between ages of 30 and 70 need about 600 international units, and once they're over 70, that number goes up to about ...

A new report highlights who’s most at risk for vitamin D deficiency and what you can do about it. Vitamin D helps keep your bones, muscles, and immune system strong, but nearly 1 in 4 Americans aren’t ...