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

Another key difference between the two forms of vitamin D is their source. “Vitamin D2 is usually produced by plants when ...

This is a detailed review of vitamin D toxicity and how much vitamin D is considered too much. Toxicity is rare but can occur with extremely high doses.

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

If you have low vitamin D, the best way to make sure you are getting enough is to take a dietary supplement. Talk to your ...

Vitamin D supplements are mostly recommended when you’re deficient. In the U.S., 35% of adults are vitamin D deficient, according to the National Library of Medicine. People who are obese, over 65, or ...

While most people don’t get enough vitamin D—a nutrient that’s crucial for bone and muscle health—it is possible to get too much. This can happen if you are taking multiple vitamin D ...

The expiration date on your vitamin bottle often doesn't reflect what you believe. If you're worried about supplements ...