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Effects of Vitamin D on Calcium Levels

A research team led by Richard Gallo, MD, PhD, who is a professor of medicine and chief of the Division of Dermatology at the UCSD School of Medicine and the Dermatology section of the Veterans Affairs San Diego Healthcare System, gave 4,000 international units vitamin D per day to 14 subjects with atopic dermatitis and 14 participants without the condition. Serum vitamin D and calcium levels were measured, and biopsies of the affected areas were performed at the beginning of the study and at the end of the 21 day treatment period. 

Although elevated serum calcium is a concern with treatment with high amounts of vitamin D, participants' levels were actually lower by the end of the study.