Yes estrogen is very necessary for balance in the body the older we get we become deplete of it! It is pure myth that we women don't need it! Also most important get a blood test to have your hormone levels checked and have them do a thyroid check, thyroid can cause the same symptoms which is very common we often don't realize how important the thyroid is to the working of the whole body if thats not functioning it effects everything mentally, emotionally and physically!..Genaveve