They used to think PMS was related to fluctuations in levels of hormones such as estrogen and progesterone. It's also possible that these imbalances are related. A dietary imbalance, for example, might cause your hormone or neurotransmitter levels to get out of whack. You're most likely to suffer PMS symptoms after you've given birth, had a miscarriage or abortion, or experienced another event that involves major hormonal upheaval. Studies show that physical activity helps to relieve PMS symptoms, perhaps by triggering the release of brain chemicals, including endorphins, which ease pain, relieve stress, brighten mood, and produce a sense of well-being.
Exercise also relaxes muscles, which can ease aches.
And it fights fluid retention, which can reduce bloating and breast tenderness. Try taking calcium supplements. Calcium's benefits didn't kick in until the third month, though, so don't give up if you don't feel better during the first cycle or two. Unlike sweets, these foods provide steady energy and are high in fiber, which can curb cravings, since fiber-rich foods take longer to digest. Talk to your doctor about taking other medications.