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A large study of weight gain in women offered even more evidence linking excessive weight to breast cancer. Researchers reviewed data on >44,000 women and determined that, the more weight a woman gained, the higher her risk was to develop breast cancer of any type, stage, or grade.Women who gained >60 lb during adulthood were compared with women who gained <20 lb. The results showed that the women who gained more weight were nearly twice as likely to have ductal-type breast tumors and >1.5 times as likely to have lobulartype cancers. The risk of breast cancer that had spread tripled for those women who gained >60 lb. The findings appeared in the July 1, 2006, issue of Cancer.
Ms. Farley is a freelance medical writer based in Wakefield, RI.