If you have a very strong family history of colon cancer, you may want to talk to your doctor or a genetic counselor about having a blood test to look for changed genes. Genetic testing can tell you if you carry a changed, or mutated, gene that can cause colon cancer. Having certain genes greatly increases your risk of colon cancer. But most cases of colon cancer aren't caused by changed genes.
WebMD Medical Reference from Healthwise
November 14, 2014
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