According to researchers at the National Institutes of Health, taking aspirin every day may lower a woman's risk for breast cancer. They studied more than 125,000 women, age 51 to 72, and found that those who took aspirin daily had a 16% reduced risk for estrogen receptor-positive breast cancer.
Estrogen receptor-positive breast cancer makes up about 75% of all cancer cases and it means that the cancer cells have receptors for the hormone estrogen. The researchers were originally looking at a class of painkillers called NSAIDs; however, they only found a benefit with aspirin.
The women analyzed in the study enrolled in the National Institutes of Health/ AARP Diet and Health Study. The study is published in the journal Breast Cancer Research.