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Cholesterol Forges Link Between Obesity and Breast Cancer

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Science  29 Nov 2013:
Vol. 342, Issue 6162, pp. 1028
DOI: 10.1126/science.342.6162.1028

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Cholesterol, the artery-clogging molecule that contributes to cardiovascular disease, has another nasty trick up its sleeve. When metabolized by the body, it turns into a potent estrogenlike molecule that spurs the growth of breast cancer in mice, and perhaps in some women. That's the conclusion of a pair of surprising studies that shed new light on the link between obesity and cancer.