The Bossticks Dr. Karan Rajan On The Truth About Gut Health, & The Rise of Colorectal Cancer
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Feb 23, 2026 
Dr. Karan Rajan, surgeon-turned-prevention advocate and bestselling author focused on gut health. He explores the rise of colorectal cancer, why diverse and slow-fermenting fiber matters, links between the microbiome and hormonal issues like endometriosis, the pitfalls of viral health trends, and practical, food-first tips to boost daily fiber.
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Slow Fermenting Fibers Feed The Far Colon
- Slow-fermenting fibers feed beneficial bacteria deep in the colon that modern diets miss.
- Examples include beans, corn, wheat, cassava and roots which reach transverse and descending colon bacteria.
Assess Poop By Frequency And Quality
- Evaluate stool frequency and quality using the Bristol stool scale, and note bloating, straining, or mucus.
- Karan explains normal range is 3x/day to 3x/week and type 3–4 (sausage shape) is ideal even if daily.
Fix Constipation With Fiber Then Hydration Movement Sleep
- Address constipation by increasing fiber first, then hydration, movement, and sleep consistency.
- Karan describes an inverted pyramid: fiber, motility/hydration, activity, and circadian rhythm controlling gut timing.
