While both men and women produce differing levels of the steroid hormone progesterone, women require much higher concentrations in order to carry out specific physiologic functions. These include monthly menstruation and the preparation of the uterus for the implantation of a fertilized egg.
Progesterone is also needed in a woman’s body to build new bone tissue and to balance the effects of too much estrogen that can cause excess growth in the uterine lining. When progesterone levels begin to diminish, so too can estrogen and testosterone in the female body.
Progesterone plays many roles in the female body including:
Because progesterone provides for a variety of important functions within the body, any fluctuation in levels can cause a multitude of symptoms.
Low progesterone can result in:
Causes of low progesterone include:
Natural progesterone bioidentical capsules, creams, patches, and sprays are available as hormone supplements to consumers in the United States currently. In pill form, the FDA-approved product Prometrium is prescribed for patients with perimenopausal and menopausal symptoms seeking relief. Products vary among manufacturers and are said to be biologically “identical” to hormones produced naturally by the body. Bioidentical progesterone is obtained from the extract of yams and micronized (ground) for greater absorption by the body. Additionally, compounded bioidentical hormones are available for those who prefer customized formulations tailored to their specific needs.
Many people assume that because some progesterone bioidentical products compounded in pharmacies are derived from natural sources, they are completely safe and without any risks or side effects. According to the Food and Drug Administration, there is no evidence to support claims that compounded bioidentical hormone therapy is safer than commercially manufactured hormones.