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...BREAST CANCER...
Women who put on pounds as adults have new reason to be worried about breast cancer. A study of 44,161 postmenopausal women linked adult weight gain to a higher lifetime risk for all types, stages and grades of breast cancer, particularly advanced malignancies. The risk for women who gained more than 60 lbs. was three times as great. Reason: breast-cancer risk is linked to lifetime levels of the hormone estrogen. Fat tissue increases circulating estrogen, thereby adding to the risk...
Things got even more confusing for women considering hormone-replacement therapy. Studies had shown that a combination of estrogen and progesterone increased the risk of breast cancer, heart attack, stroke and blood clots. A new study found that estrogen-only treatments appear safer, with no increase in breast-cancer risk but some increased risk of stroke or clots. A later study found a breast-cancer risk from estrogen therapy, however, among some postmenopausal women. If you must have hormone therapy, get it in small doses for short periods...
...second major hypothesis, according to Donald Leung, head of pediatric allergy and immunology at the National Jewish Medical and Research Center in Denver, is "food-induced tolerance"-early exposure to certain foods (even in utero or through breast milk) triggers allergic reactions...
...news came in another large population study, this one of more than 90,000 nurses. A report published in the Archives of Internal Medicine found that the risk of estrogen- and progesterone-receptor-positive breast cancer increased most in those nurses who ate the most red meat. Women who ate more than 1 1/2 servings of red meat a day had nearly double the risk, compared with those who ate three or fewer servings a week. The authors offered several theories for what's behind the correlation. One possibility is that red meat delivers too much iron in a form...