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 ...

“Vitamin D deficiency is very common and ongoing research has shown its impact on physical and mental well-being,” says Dr.

Vitamin D requires magnesium to become active, crucial for bone health, immune function, and mood regulation. Avocados are a ...

To quote from his review: "Vitamin D deficiency and insufficiency have been defined as a 25-hydroxyvitamin D <20 ng/ml and 21-29 ng/ml respectively. For every 100 IU of vitamin D ingested the ...

Researchers have identified that children deficient in vitamin D experience more severe symptoms of obstructive sleep apnea ...

The activated vitamin D (25-hydroxy vitamin D3) in Doctor’s BEST Vitamin D3 2500IU with Vitashine D3 not only influences bone health but also helps support immune system responses, the heart and ...

The groups who benefited the most were non-Westerners, those who started with a 25-hydroxy vitamin D level of less than 15.0 ng/mL (below 20 ng/mL is generally deemed to be vitamin D deficiency ...

Learn about the best time of day and way to take vitamin D and if you should consider a supplementing with this nutrient.