Unfortunately, a great deal of misinformation exists that estrogen and progesterone cause or contribute to breast cancer. This doesn’t really make a lot of sense, since hormone levels are highest in younger women, yet menopausal women (who are hormone deficient) have had the highest cancer risk. Synthetic estrogens and progestins (such as oral contraceptives and 17-medroxy progesterone) have been demonstrated to increase cancer risk. Environmental toxins called xeno-estrogens, which are estrogen-like chemicals in the environment (such as bis-phenol-A and polycarbonates) in plastics and cosmetics* also clearly stimulate the growth of breast cancers. (see Environment, Chemicals, & Breast Cancer)
Conversely, breast health is dependent on the proper balance of bio-identical estrogens and progesterone. Many integrative doctors are trained in using specialized testing and compounded bio-identical hormones that can actual decrease cancer risk.
*Be sure to use natural skin care products that avoid use of these chemicals such as:
Age More Gracefully all-natural skin care AMG http://AMGNaturally.com