Colorectal cancer is now the No.1 cause of death for people under 50 in the United States. When it is caught early, nine out of ten people survive. When it is caught late, only two out of ten do. Yet most people are not screening, not eating enough fiber, and have no idea how rapidly the gut microbiome is collapsing in modern populations. I sat down with Dr. Karan Rajan, NHS surgeon, gut health expert, and founder of Loam Science, to break down the real biology behind the gut microbiome and why it may be one of the most powerful levers we have for longterm health. We cover the rising colorectal cancer epidemic in young people, why fiber is the single most important thing you can do for your colon, and how the microbiome connects to your brain, heart, hormones, immune system, and even your skin. Dr. Karan also explains how stress, poor sleep, NSAIDs, antibiotics, and proton pump inhibitors silently destroy the gut lining, why the carnivore diet starves your microbiome, the emerging link between gut health and endometriosis, and what the science actually says about microbiome testing, GLP-1 peptides, and supplement quality. Reduce your risk of Alzheimer's with my science-backed protocol for women 30+: https://go.neuroathletics.com.au/youtube-sales-page Subscribe to The Neuro Experience for evidence-based conversations at the intersection of brain science, longevity, and performance. _____ TOPICS DISCUSSED 00:00 Colorectal Cancer Is Now the #1 Killer Under 50 01:24 Why Early Screening Changes Everything 03:19 The Gut Microbiome Explained Simply 05:51 Why Fiber Is the Rent for Your Colon 11:32 The Hadza Tribe and What 100g of Fiber a Day Does 18:45 The Carnivore Diet and What It Does to Your Gut 24:10 Stress, the Vagus Nerve, and Gut Dysfunction 31:20 Sleep, Circadian Clocks, and Your Bowel Health 33:06 The Gut-Cancer Connection 34:12 Cholesterol, the Gut-Heart Axis, and LDL 38:50 Estrogen, Perimenopause, and the Microbiome 43:15 Endometriosis and the Microbiome Trial 48:30 Leaky Gut, NSAIDs, Antibiotics, and PPIs 53:25 GLP-1 Peptides, Semaglutide, and What the Research Says 55:38 Why Supplement Quality Is Mostly Unregulated _______ Thank you to our sponsors Function Health: https://www.functionhealth.com/louisanicola Timeline: http://timeline.com/NEURO Wayfair: https://www.wayfair.com/ Cheers Health: https://CheersHealth.com/NEURO Use code NEURO for 20% off Jones Road Beauty: https://www.jonesroadbeauty.com Use code NEURO BASED Bodyworks: https://basedbodyworks.com/ Use code NEURO for 20% off _______ I’m Louisa Nicola - clinical neurophysiologist - Alzheimer’s prevention specialist - founder of Neuro Athletics. My mission is to translate cutting-edge neuroscience into actionable strategies for cognitive longevity, peak performance, and brain disease prevention. If you're committed to optimizing your brain- reducing Alzheimer’s risk - and staying mentally sharp for life, you’re in the right place. Stay sharp. Stay informed. Join thousands who subscribe to the Neuro Athletics Newsletter → https://bit.ly/3ewI5P0 Instagram: https://www.instagram.com/louisanicola_/ Twitter : https://twitter.com/louisanicola_ Learn more about your ad choices. Visit megaphone.fm/adchoices
