04/16/2026
We asked Dr. Sang Lee, the Chief of Colon and Re**al Surgery at Keck Medicine of USC, his advice on how to lower your risk of colon cancer, hereâs what he said.
DO:
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Get screened for colon cancer starting at age 45.
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Know your family history, if a first-degree relative had colon cancer, get screened 10 years earlier than their diagnosis
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Understand that most colon cancers start as polyps, removing them during a colonoscopy can actually prevent cancer
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Prioritize screening, when caught early, colon cancer is highly curable
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Eat a diet rich in fiber, fruits, and vegetables
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Stay physically active, movement matters more than you think. Regular exercise is associated reduced colon cancer risk.
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Limit alcohol consumption
DONâT:
âAvoid screening because of prep, modern options are much more tolerable, and it could save your life
âAssume youâre too young, rates are rising in adults under 50
âIgnore a positive stool test, it always needs a follow-up colonoscopy
âOverlook warning signs like blood in stool, new constipation, or narrowing stool
âWait for symptoms, early colon cancer is often silent
âOverdo red/processed meats or refined sugar-heavy foods. High consumption is associated with increased colorectal cancer risk.
âSmoke, this increases both risk and mortality
Prevention and early detection arenât complicated, but they do require action.