Furthermore, women who stopped taking estrogen for more than three years were not at increased risk for breast cancer. Doctors prescribe progesterone only to women who have a uterus. Estrogen stimulates the inner lining of the uterus to grow.
Progesterone stops the stimulation.
Women who are given only estrogen are six times more likely to suffer uterine cancer because they have a uterus that is stimulated all the time which can lead to uncontrolled growth which is cancer. Women who take estrogen and progesterone suffer almost double chances of getting breast cancer, but they still live longer than those who don't take hormones. Estrogen prevents strokes, heart attacks, osteoporosis, senility, lowered IQ, colon cancer, Alzheimer's disease, loss of teeth hot flushes, dry vagina and depression. A woman bones are strongest when she is 20. After that, she loses bone strength progressively each year.