Paradoxical Clinical Effect of Estrogen on Breast Cancer Risk: A “New” Biology of Estrogen-induced Apoptosis

By V. Craig Jordan and Leslie G. Ford

Administration of estrogen replacement therapy (ERT) decreases the incidence of breast cancer, as shown in a double-blind, placebo-controlled randomized trial of the Women’s Health Initiative (WHI) in 10,739 postmenopausal women with a prior hysterectomy. Though paradoxical because estrogen is recognized to stimulate breast cancer growth, laboratory data support a mechanism of estrogen-induced apoptosis under the correct environmental circumstances... (Read Full Article)

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