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2002 MAR 14 - (NewsRx.com & NewsRx.net) -- A new study adds to the growing body of evidence that recent, long-term use of hormone supplements after menopause may increase the risk of breast cancer.
Women who had taken estrogen alone or estrogen plus progestin for at least five of the preceding six years were about 70% more likely than nonusers to develop breast cancer, the study found.
The increased risk was about 50% for developing ductal cancer, which occurs in the milk ducts, and about threefold for developing lobular tumors, which form in the milk-producing glands and account for about 10% of all breast cancer cases.
The study further complicates the complex question of whether to take hormones after menopause.
Estrogen supplements are taken by millions of women to ease hot flashes, brittle bones and other symptoms of menopause.
For years, doctors also thought the hormones ward off heart attacks, but more recent studies have challenged that belief. Another recent study questioned whether they are effective in improving a woman's mood and energy level.
The latest study is in line with recent research linking long-term hormone use with breast cancer. However, it lacked information on participants' habits that could influence breast cancer risk - including alcohol use, physical activity and breastfeeding.
Source: HighBeam Research, Another study establishes hormone link.(may increase the risk of...