Medically reviewed by Jamie Johnson, RDN Key Takeaways Too much vitamin D can lead to harmful health effects, including high ...

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

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).

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 ...

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 ...

The LetsGetChecked micronutrient test is a finger-prick test that a person can carry out at home. The test can check for deficiencies in several vitamins and minerals, including: copper vitamin D ...

A Verywell Health editor shares her experience with vitamin D deficiency and the impact that vitamin D supplements had on her ...

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

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 ...

Scientists are still untangling why the nutrient gap persists—and what it reveals about how women’s health is studied and treated.

Symptoms of excessive vitamin D intake may include nausea, vomiting, or loss of appetite, excessive thirst and frequent ...