Authored by a team of researchers at the California-based non-profit Autoimmunity Research Foundation, the paper goes on to point out that molecular biologists have long known that 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.