Unlike the other forms, hepatitis D can’t be contracted on its own. It can only infect people who are already infected with hepatitis B. Hepatitis D can be acute or chronic. Acute hepatitis D occurs ...

Low vitamin D levels may be linked to joint pain, especially with chronic or severe deficiency. Evidence is mixed, so more research is necessary. Studies suggest vitamin D supplementation may improve ...

For adults, a level of vitamin D in the blood of 20 nanograms per milliliter (ng/mL) or above is generally considered adequate. Levels below 20 ng/mL are generally too low for adequate bone health and ...

Hypervitaminosis D is a rare but potentially serious condition. It occurs when you take in too much vitamin D. The main cause is taking high-dose vitamin D supplements. You probably aren’t getting too ...