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Elizabeth R. Bertone-Johnson, ScD, Associate Professor in the Department of Public Health at the University of Massachusetts at Amherst and Susan E. Hankinson, ScD, Associate Professor of Medicine at the Brigham and Women's Hospital and Harvard Medical School, et al. wrote in their 2005 article "Calcium and Vitamin D Intake and Risk of Incident Premenstrual Syndrome," published in the Archives of Internal Medicine:

“Frequent milk consumption was also associated with lower risk [of PMS]. Participants consuming 4 servings or more per day of any type of milk had an RR [relative risk] of 0.68 compared with those reporting 1 serving or less per week. Whole milk intake was associated with a modest increase in risk, while women who frequently consumed skim or low-fat milk had a significantly lower risk of developing PMS; the RR for women consuming 4 servings or more per day of skim or low-fat milk compared with those reporting 1 serving or less per week was 0.54. The relationship between milk intake and risk of PMS did not vary by level of calcium or vitamin D supplementation…

Findings from our nested case-control study suggest that a high dietary intake of vitamin D and calcium may lower the risk of incident PMS. We observed a significantly lower risk of developing PMS in women with high intakes of vitamin D and calcium from food sources, equivalent to about 4 servings per day of skim or low-fat milk…

The finding that frequent milk intake is protective against PMS is consistent with our results for calcium and vitamin D. Each serving of fortified milk contains approximately 300 mg of calcium and 100 IU of vitamin D; 4 servings per day would provide women with approximately the amount of calcium and vitamin D from food sources at which we saw a significantly lower risk of PMS. It is unclear why frequent consumption of skim or low-fat milk and whole milk may be differently related to PMS.”

2005