Vit D may exacerbate autoimmune disease

Deficiency in vitamin D has been widely regarded as contributing to autoimmune disease, but an article in Autoimmunity Reviews explains that  low levels of vitamin D may be a result, rather than a cause of disease  and supplementing with vitamin D may actually exacerbate the illness.

The paper goes on to point out the form of vitamin D derived from food  and supplements, 25-hydroxyvitamin D (25-D), is a secosteroid rather  than a vitamin. Like corticosteroid medications, vitamin D may provide  short-term relief by lowering inflammation but may exacerbate disease  symptoms over the long term.