Bioidentical vs. Synthetic Hormones—Whats the Difference?
One of the best examples of a synthetic hormone is the commonly prescribed menopause drug PremPro. This stands for Premarin and Provera. Premarin is an estrogen made from the urine of pregnant mares. Provera is a synthetic progesterone, known as a progestin. Provera has been shown to increase a woman’s risk of heart disease, stroke and breast cancer. This is in contrast to bioidentical progesterone, without which a woman cannot get pregnant or stay pregnant. The fetus is bathed in progesterone during the third trimester of pregnancy. Bioidentical progesterone is very safe! Synthetic progestins are not safe!
