This is a physically based problem, although it is still far from clear what causes all the symptoms. It is possible, of course that there is more than one cause of PMS may be hormonal imbalance-excessive levels of estrogen and inadequate levels of progesterone-as well as sensitivity to fluctuating hormones. Diet may be an important contributing factor for some women.
Although the exact cause of PMS is unknown, it seems to occur because of changing hormone levels, and their effect on chemicals
