A diet rich in calcium and vitamin D may lower the risk of developing premenstrual syndrome (PMS), according to a study in the June 13 issue of Archives of Internal Medicine.
While most women may experience mild emotional or physical premenstrual symptoms, as many as eight to 20 percent of women experience symptoms severe enough to meet the definition of premenstrual syndrome, characterized by moderate to severe symptoms that substantially interfere with normal life activities and interpersonal relationships, according to background information in the article. Previous studies have suggested that calcium supplements and vitamin D, a hormone that regulates the absorption of calcium, may reduce premenstrual occurrence and severity.
Elizabeth R. Bertone-Johnson, Sc.D., of the University of Massachusetts, Amherst, and colleagues compared the diets and supplement use of 1,057 women aged 27 to 44 years who reported developing PMS over the course of 10 years to 1,968 women who reported no diagnosis of PMS or no or minimal premenstrual symptoms in the same time period. The women, who participated in the Nurses Health Study (NHS), all reported no PMS in 1991, at the beginning of the study period. Their intake of calcium and vitamin D from diet and/or supplements was calculated from food frequency and standard NHS questionnaires administered in 1991, 1995 and 1999.