Researchers have discovered that similarly to your gut, your breasts have their own microbiome — a community of microorganisms that maintain the health of the surrounding tissue. And just like your gut, the microbiome in your breasts also can be affected by diet. This has implications for breast cancer prevention, according to a paper published in the journal Cell Reports: Female monkeys were fed either a high-fat, “Western-style” diet or a plantbased Mediterranean diet for two and a half years. The plant-based monkeys showed a tenfold increase of mammary gland lactobacillus, which has been shown to decrease breast cancer tumor growth, as well as more bile acid metabolites in their breast tissue, which may reduce breast cancer risk.
This suggests that women might be able to boost their breast microbiome and prevent or at least lower their risk of breast cancer by eating a plantbased diet rich in antioxidants and polyphenols, which includes lots of fruits, vegetables and legumes and healthy fats such as olive oil, nuts and seeds.