Excerpt from Ageless: The Naked Truth About Bioidentical Hormones
Women remain confused about hormones and in some cases terrified of hormone replacement; one day, headlines in the newspapers praise hormone replacement therapy (HRT); the next day, the headlines are screaming that HRT will kill us.
The truth is, despite the widespread use of synthetic hormone brands such as Premarin and Provera, these drugs have always been associated with cancer. The first cancer linked with synthetic hormone replacement was cancer of the uterus lining (endometrium).
The most recent resurfacing of the negatives associated with synthetic hormones and cancer came from a government-sponsored study titled the Women's Health Initiative. This study was supposed to last 8.5 years, but it was stopped after only 5.2 years because the risks of using Premarin and Provera outweighed the benefits. Breast cancer was just one of the increased risks discovered. Additionally, the study concluded that synthetic hormone replacement therapy protects neither your bones nor your heart. Ironically, bone and heart protection were two of the primary benefits once used by doctors as selling points to get women to fill their prescriptions for these drugs.