One 2009 study found that
black bean consumption may decrease the risk of colon cancer (Bennink 2009), a 2011 study found that black beans helped improve insulin resistance (Tetsuya Inagum1, Junkyu Han, Hiroko Isoda 2011) and yet another study found that eating black beans helped to reduce blood sugar in Type 2 diabetics.
Not exact matches
To further decrease risk of breast cancer, look to daily tea
consumption (including a few herbal varieties) flax seeds,
black beans, the spice turmeric, and an hour of exercise every day.