Vitamin D tests involve taking a blood sample to measure the vitamin D levels in your bloodstream. There are two forms of vitamin D in the blood: 25-hydroxy vitamin D, or calcidiol, and 1,25-dihydroxy ...

Doctors explain why vitamin D supplements may not work properly if your kidneys are unhealthy, and how kidney function ...

Everyday Health independently vets all recommended products. If you purchase a featured product, we may be compensated. Learn why you can trust us. Adding vitamin D supplements to your diet can help ...

Vitamin D dosage recommendations can vary depending on several factors, including your age, skin color, medical history, and where you live. Vitamin D is commonly known as the “sunshine vitamin.” That ...

‌Vitamins are important to your body’s health. The vitamins in your food, that you absorb from your environment, or get from supplements all work together. However, too much of certain vitamins can ...

Benign paroxysmal positional vertigo is characterized by recurrence, which exposes patients to repeated vertigo attacks. Vitamin D deficiency has been found to be a risk factor in benign paroxysmal ...

Vitamin D is important for your bones, muscles, nerves, immune system, and more. But if you get too much, it could lead to a rare and possibly serious condition called vitamin D toxicity. You may hear ...

Research suggests a link between low vitamin D levels and depression, potentially due to vitamin D’s role in brain function, serotonin production, and inflammation regulation. But more research is ...

The sun is one of the best sources of vitamin D for the human body. How much sun a person needs per day depends on factors such as skin type, the season, and cloud coverage. Vitamin D is an essential ...