Hi, After hearing your history I would advise you to take the following to prevent colon cancer. Curcumin has been studied for its effects in cancer prevention. Curcurmin is a type of ginger found in turmeric, which is commonly used in Indian food. This supplement contains anti-inflammatory properties. Curcumin is not fully absorbed in the blood stream, thus remains in the gut. Studies have shown that the supplement may prevent colon cancer through its anti-inflammatory and anti-tumor properties. Garlic is a vegetable that may reduce the risk of developing cancer, particularly gastrointestinal tract cancers. Garlic contains antibacterial properties, and may be able to prevent the formation and activation of cancer-causing substances, and boost DNA repair. Garlic is the most potent when consumed raw. This may be done by consuming the vegetable itself, or through supplements. Garlic supplements come in four forms: garlic essential oil, garlic oil macerate, garlic powder, and garlic extract. Too much garlic may, however, be hard on one’s body. Folic acid, a B vitamin complex, and other B vitamins may aid in colon cancer prevention. Additionally, recent research suggests that a deficiency in folic acid has been linked to cancer. Omega-3 PUFAs are healthy fatty acids and may be linked to colon cancer prevention. Omega-3s are found in fish and nuts and may also be taken in a pill form. Selenized Yeast: A recent Nutritional Prevention of Cancer Study found a statistically significant reduction in the number of cases of colorectal cancer, as well as other cancers, through administration of selenized yeast. Regards Dr. Monish De, Oncologist