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 deficiency in early life may contribute to biological processes that raise the risk of autoimmune conditions, ...

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

In a multivariable analysis of kids who were undergoing adenotonsillectomy, obstructive Apnea-Hypopnea Index (AHI) scores ...

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

Over the past few decades, the "normal" blood level of vitamin D (25-OH vitamin D) was based on the amount needed to keep PTH from becoming abnormally high. Again, PTH at high levels can cause ...

Deficiency of vitamin D has been linked to issues in bone health, but recent studies are revealing a more complex ...

were significantly lower in children with normal vitamin D levels compared with those with vitamin D deficiency (difference -14.6, 95% CI -27.2 to -2.2), reported Cristina Baldassari, MD ...

You might have heard that vitamin D can be crucial for bone health, and that taking supplements may be in order if you're not getting enough naturally from sunlight or from D-rich foods like eggs ...

New research suggests the seasonal shift to winter could have serious long-term consequences, especially for our children.

Peeing more than usual and feeling more thirsty are symptoms of too much vitamin D. Learn why overdosing on vitamin D is ...