Can natural progesterone help with endometriosis or fibrocystic breast?

There are many factors that affect both of these conditions, one common factor being a higher level of circulation estrogen, indicating a hormonal imbalance. Progesterone is the precursor hormone and it helps to normalize all other endocrine and hormonal activity in the body. In this case, assisting to lower the level of estrogen in the body and thus, possibly helping to clear these conditions.