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Researchers have learned you don't need a family history of colorectal cancer to have a genetic mutation that predisposes you to the disease.
Mayo Clinic is sequencing the exomes of tens of thousands of people from diverse backgrounds to investigate large-scale patterns of distinctive mutations that fuel disease.
Is there a history of cancer in your family? If so, you could be at risk. Family medicine physician Dr. John Presutti advises learning your family's healthy history and acting on it.