Low Levels Of Vitamin D In Patients With Autoimmune Disease May Be Result, Not Cause, Of The Disease

Deficiency in vitamin D has been widely regarded as contributing to disease, but a review appearing in Autoimmunity Reviews explains that low levels of vitamin D in patients with autoimmune disease may be a result rather than a cause of disease. The article uses molecular and epidemiological evidence to explain how supplemental vitamin D -- a substance which is a secosteroid rather than a vitamin -- may actually exacerbate autoimmune disease.