Harvard Women's Health Watch

Taking too much vitamin D can cloud its benefits and create health risks

Some people are overdoing it in search of better health. Vitamin D is having its day in the sun. In recent years, research has associated low blood levels of the vitamin with higher risks of everything from heart disease, diabetes, and cancer to mood disorders and dementia. The findings have not gone unnoticed. Vitamin D supplements and screening tests have surged in popularity. …

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