April 5, 2011 – For women with a prior hysterectomy, estrogen-only hormone replacement therapy (HRT) is less risky for women in their 50s than was thought -- and may protect against breast cancer.
For women in their 70s, however, estrogen-only HRT increased risk of colorectal cancer, chronic disease, and death, according to seven-year follow-up data from the Women's Health Initiative (WHI).
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