Only a few foods have been scientifically proven to be good for period cramps and PMS. Cranberries can help prevent recurrent UTIs (Urinary Tract Infections).

For menstrual cramps, the vitamins B6, B12, as well as Zinc, Magnesium, and Valerian root have all been proven to help. Ideally your preteen or teen will want to get these vitamins and minerals from dietary sources rather than supplements.