I started using hormone replacement therapy when I was 54 years old and will continue to use it (76) the rest of my life. I believe it has enhanced my life physically and mentally. I am very youthful and look 10 years young than I am. I have strong bones and continue to work as a nanny/house/petsitter. I attribute it to my therapy with my pro-therapy physician. I get my blood tested every six months to make sure I am getting the right hormones.