Hormone treatment or replacement was one of the major medication for women after menopause. But people's understanding about hormone replacement has changed since more and more evidence showing that there actually could be serious side-effects, e.g. heart attack, breast cancer... (there is a 10- or 20-year study about this led by NIH, which I don't have time to check in detail.)
The important point here is that DON'T MESS with HORMONE. Hormones are supposed to do their proper functions at proper tissue (organ) at proper level and proper time during life. If any of these factors is improper, then there will very likely be unexpected effects, --could be very serious sometimes. Mother nature designed human beings as what we are. Many biological processes, such as aging and menopause, are physiological phenomena. Although there are ways to manipulate them, like hormone replacement, please be very careful. Some ways are always proper for example, GOOD NUTRITION and EXERCISE.