August 1, 1980

Medical News

JAMA. 1980;244(5):419-427. doi:10.1001/jama.1980.03310050003001

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Obesity may reduce survival, increase risk, in breast cancer  Breast cancer patients who are overweight have a "significantly reduced" chance of survival compared with patients of normal weight, a Canadian researcher has reported. Moreover, there is already some existing evidence known that the risk of development of breast cancer increases with a rise in body weight.Says Norman F. Boyd, MD, of the Princess Margaret Hospital, Toronto, and the Ontario Cancer Institute: "The possibility is raised that in obese people substantial reductions in body weight may have a beneficial effect in the prevention and treatment of breast cancer." However, he conceded that neither he nor anyone else—as far as he knows—has studied the effects of weight loss on breast cancer.In a report to the recent meeting of the American Society for Clinical Investigation in Washington, DC, Boyd gave further credence to the role hormones are thought to play