These 7 foods have some surprising cancer-fighting benefits! 1. Black beans contain anthocyanins and triterpenoids, which are powerful antioxidants. 2. The capsaicin found in chili peppers has been shown to cause cancer cell death. 3. New research suggests that mushrooms can slow the growth of breast cancer. 4. Fatty fish like tuna, salmon, sardines, and mackerel contains cancer-fighting omega-3 fats. 5. Dark leafy greens contain lutein and beta-carotene which may help prevent breast cancer. 6. Pomegranates are high in punicalagin and anthocyanins, both powerful antioxidants. 7. Green tea may help prevent breast, prostate, colon, stomach and skin cancer.