How Do Tamoxifen and Femara Fight Breast Cancer?

"Many cancers are stimulated by estrogen, so we've developed medications to block it" (1:12)
Hormone therapy, explains breast surgeon Amber Guth, stops estrogen from binding to cancer cells.
Amber Guth, MD, a breast cancer surgeon at NYU Medical Center, lays out the basics of hormone treatment. Patients take a long-used antihormone drug known as tamoxifen and/or a medicine in a newer class called aromatase inhibitors.
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