The Gut Insiders 05 Colon Cancer: The Disturbing Trend I See In My Patients
Mar 16, 2026
Rising colorectal cancer rates in younger adults and why fit people can still develop dangerous polyps. How ultra-processed foods, low fiber and processed meat may drive risk. The role of alcohol, poor sleep, stress and circadian disruption in gut health. Why fiber, regular exercise and timely screening matter for prevention.
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Polyps Grow Slowly Over A 10–15 Year Window
- Polyps are the precursor to most colorectal cancers and typically grow slowly over 10–15 years.
- Will described the progression visually from a 1 mm "pencil tip" to raspberry size and emphasized that removal during colonoscopy cuts off cancer development.
Modern Lifestyle Is Changing Colon Cancer Risk
- The rise in young colorectal cancer is multifactorial: ultra‑processed foods, high red/processed meat with low fiber, sedentary lifestyle, alcohol, and circadian/stress effects.
- Will tied these factors to microbiome disruption, inflammation, and carcinogenic metabolites like secondary bile acids and acetaldehyde.
Prioritize Fiber To Protect Your Colon
- Feed your microbiome high fiber; every extra 10 g reduces colorectal cancer risk by about 10%.
- Will cited a BMJ meta‑analysis and EPIC study showing doubling fiber can cut risk ~40% and a two‑week diet swap changed protective butyrate levels.
