Study: No caffeine link to breast cancer

A new study in the Archives of Internal Medicine finds no link to the drug and malignant breast tumors.

A few earlier studies had suggested caffeine could play a role. But this research of more than 38,000 American women finds it's biologically unlikely that caffeine influences breast cancer risk.

Still, this study probably won't end the speculation. Researchers say part of the problem is women who drink heavy amounts of caffeine tend to have other not-so-healthy lifestyle habits that may be linked to breast cancer risk.

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