Whether it is a white blood cell targeting a virus or the brain is suffering from depression, when it comes to our bodies we are a collection of chemicals. For both men and women, one of the strongest chemical regulators within the body are hormones. A part of the endocrine system, these compounds originate in the various endocrine glands that are located throughout the body, as well as the pancreas. Additional producers are found within the testes of men and ovaries of women. The ceasing of menstruation that occurs during menopause can be an extremely difficult time for women and a new treatment regimen in the form of bioidentical hormone replacement is causing a stir.