Progesterone is a basic hormone responsible for the manufacturing of many very important hormones and is produced primarily in the Adrenal glands in men and woman. However it is also produced in large quantities in the ovaries in fertile females (to keep oestradial under control). Also huge amounts are released during pregnanacy.
Before menopause, during the peri-menopausal stage of life, you stop ovulating, you produce No progesterone from the Ovaries any more. However the oestrogen is still very high and “unopposed” causing severe symptoms of Oestrogen dominance.
In menopause the oestradial levels drop off too … This happens slowly over a few years. While this pre menopause and menopause stage is happening we now need more progesterone supplements. Once the oestrodial levels are low and the menopause oestrogen (oestriol) takes over, then your body needs less progesterone. However because of our polluted environment supplying us with cancer causing xeno oestrogen, mainly from the petro chemicals, we need to continue on half doses of progesterone until we leave this planet ! Progesterone will protect you against oestrogen cancers and osteoporosis as you age.