Harvard Women's Health Watch
Does taking progesterone reduce miscarriage risk?
Ask the doctor Q. My daughter is 42 and pregnant. She has had one miscarriage. Iíve read that progesterone may help prevent another one. Should she take it? A. Miscarriage is more common as women get older, and for women in their 40s, over 40% of pregnancies end in miscarriage. The vast majority of the time, there is nothing that a woman or her doctor can do to change this