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# Drinking coffee reduces breast cancer risk
- URL: https://www.foodconsumer.org/coffee_breast_cancer_0708130730/
- Published: 2013-07-08T20:30:00.000Z
- Updated: 2026-09-22T15:46:57.000Z
- Description: In an Ontario case-control study of 3,062 breast cancer cases and 3,427 controls, women drinking five or more cups of coffee a day had significantly lower risk, including a 37 percent reduction among postmenopausal women. Caffeine intake itself showed no association.
- Author: Food Consumer
- Tags: Food, Nutrition, #vivvo-import

Monday July 8., 2013 (foodconsumer.org) -- A new study released in Nutrition and Cancer suggests that drinking a lot of coffee, but not ingestion of caffeine may reduce the risk of estrogen receptor negative breast cancer in postmenopausal women.

Elizabeth C. Lowcocka and colleagues conducted the case-control study and found drinking five cups or more coffee per day was associated with nearly 30 percent reduced risk for breast cancer.

Previous studies on coffee drinking and risk of breast cancer showed inconsistent results with some suggesting inverse and some others suggesting null associations.

The current study involved 3062 cases of breast cancer registered in the Ontario Cancer Registry and 3427 controls from the general population.

It was found that overall, there was no association between coffee and caffeine consumption was risk of breast cancer. However, a significant reduction in breast cancer was found among those who drank five or more cups of coffee per day.

The 59% reduction in breast cancer risk was found among who had high coffee intake. On the other hand, caffeine intake was not associated with the risk of breast cancer and variants of CYP1A2, a gene that regulates caffeine metabolism did not affect the risk and among postmenopausal breast cancer was reduced by 37% among those who had high coffee intake. (reporting by Jimmy Downs)