A randomized trial suggests that the Mediterranean diet can lower risk of breast cancer. This regimen emphasizes primarily plant-based foods, such as fruits and vegetables; whole grains; legumes and nuts; replacing butter with olive oil or canola oil; and using herbs and spices instead of salt to flavor foods. Fish high in omega 3 fatty acids and some dairy products are also featured. Red meat is limited to only a few times a month. Research has shown that the traditional Mediterranean diet reduces the risk of heart disease and lowers cholesterol. A recent study also revealed that the incidence of breast cancer was significantly lower in women who followed the Mediterranean diet compared with women who did not follow it.

(Source: Journal of the American Medical Association, September 14, 2015