In a 2012 study in the journal Multiple Sclerosis, a high dose of Vitamin D3 (5,000-10,000iu) per day for 15 weeks increased an important component of the immune system called il-10. Il-10 is a molecule that instructs overactive immune cells to calm down.
As Il-10 increased, a destructive molecule called il-17 fell. Il-17 contributes to autoimmunity in MS.
Il-10 is often low in autoimmune illness. Raising il-10 may help quiet self-attacking immune cells and scientists hold out hope for treatment MS using vitamin D.
Vitamin D has been linked to improvements in several other autoimmune diseases.
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