Harvard Health Letter

Breast cancer risk and alcohol

Research suggests no more than one drink per day.

Previous research has found that drinking alcohol can increase a woman's risk of invasive breast cancer. How much alcohol raises the risk?

Dr. Wendy Chen, an assistant professor at Harvard Medical School, was one of the authors of a recent study that appeared in the Journal of the American Medical Association. The study found that even moderate drinking levels were linked to an increased breast cancer risk.

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