It alleviates hot flashes, mood swings and vaginal dryness. It reduces your risk of heart attack and memory loss, and may even prevent Alzheimer's. It also stops the progression of osteoporosis. So to my mind, the only real debate is how to replace your hormones. But on that point, I have much to say.
Estrone is the hormone thought to be responsible for breast cancer.
Estriol, on the other hand, is much safer. It does not stimulate cancerous changes in the breast. It fact, it may actually prevent them. In scientific tests, H.M. Lemon, M.D., demonstrated more than 30 years ago that women with breast cancer have lower levels of estriol. He also proved that women without breast cancer have naturally higher estriol levels, compared to estrone, than women with breast cancer.