An initiative at Oregon Health and Science University and OHSU Health is associated with a 25% reduction in the number of ...

Too much vitamin D, or vitamin D toxicity, happens due to a buildup of calcium in the blood (hypercalcemia), which can be ...

Some vitamin D tests may give misleading results despite progress made in recent years to improve the quality of these assays, according to the US Centers for Disease Control and Prevention (CDC).

Should you get a blood test to see if you're deficient in vitamin D? It sounds like such a good idea, seeing as how most people don't get enough sunshine to make vitamin D themselves. And the tests ...

Australia has seen a surge in vitamin D testing of children, with similar trends reported for adults around the world. GPs are now being urged not to test for vitamin D unnecessarily. So when is low ...

We tested the best vitamin deficiency tests from LetsGetChecked, Everlywell, and LabCorp, and our testers found them easy to use and informative. Learn more about the best vitamin deficiency tests ...

A daily vitamin D supplement can support bone strength, muscle function, and balance—especially in people who are vitamin D ...

Vitamin D deficiency can lead to bone softening and subsequent bone pain and fractures. Learn its causes, diagnosis, treatment, and prevention.

Jane McClenaghan on how to make sure you’re getting just enough of this essential nutrient - without overdoing it ...

WASHINGTON — The nation’s largest medical lab company says it recently discovered and fixed a problem that led to inaccuracies in a small number of tests for vitamin D deficiency. Quest Diagnostics of ...

Your fork might need to pick up some of the sun's slack this season.

There's no ideal time to take a vitamin D supplement for maximum absorption, but what you take it with can have an impact.