Medically reviewed by Soma Mandal, MD A vitamin D test is a blood test that measures the level of vitamin D (calciferol) in ...

Vitamin D affects how your immune system works, and plays a role in controlling certain types of inflammation, including the ...

Despite the importance of vitamin D for overall health, it is estimated that about one billion people worldwide have a deficiency, usually defined as having serum levels of 25-hydroxyvitamin D 3 ...

Erasmus University Medical Center researchers in Rotterdam have tracked vitamin D supplementation improvements in bone ...

It is a proven fact that sunshine is the best source of vitamin D, and as the winters approach, we may be getting less of ...

Compared with the general population, patients with erythropoietic protoporphyria have notably lower bone mineral density, ...

Vitamin D deficiency is common in children with severe obstructive sleep apnea (OSA) and is associated with increased OSA severity. Lower serum 25-hydroxyvitamin D levels correlate with higher ...