Premenstrual syndrome is believed to occur due to falling levels of either estrogen and/or progesterone in the week leading up to menses.
It is important to remember that there are receptors for estrogen and progesterone all over the body, including the brain, breast, muscle and fat cells.
One theory about what causes PMS in some are levels of estrogen that are always a bit more prevalent than progesterone.
Remember that female metabolism is exquisitely balanced in its cyclical fluctuations of estrogen and progesterone. Any change in this system—usually due to poorly designed diets or poor stress management—can result in symptoms of poor metabolic function.
As a result, SHMEC can go out of check and other uncomfortable symptoms can manifest including anxiety, depression, breast tenderness, cramping and other effects.
If you are a woman who has dealt with PMS, realize that this is a clue that your hormonal system may be out of balance, and you will want to use these symptoms as clues, like a detective, about how to design your new lifestyle in this program.
As you make progress, you may be surprised to see that these symptoms begin to dramatically improve.