Can Your Gut Help Prevent Breast Cancer?

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Factors like diet and lifestyle affect the gut microbiome (a complex of bacteria and organisms in the intestines). Your microbiome can affect estrogen levels, which is a risk factor for hormone-receptor positive breast cancer. We are comparing the gut bacteria of women with and without breast cancer to explore how therapies targeting the microbiome, like probiotics, may be used as a tool to prevent breast cancer.


  • Women age 40-100 years old
  • Completion of 2 minute screening survey to determine eligibility