The Vibrant Wellness Podcast Heal Your Gut, Improve Your Life: The Power of the Microbiome with Dr. Karan Rajan, NHS
15 snips
Nov 19, 2025 
Dr. Karan Rajan, an NHS surgeon and popular health content creator, shares his insights on gut health and the microbiome. He discusses how your microbiome affects everything from mood to immune function. Karan emphasizes the importance of fiber, listing top sources like beans and berries. They delve into the connection between traditional diets and longevity, how stress impacts gut health, and practical tips for improving digestion. Ultimately, Karan encourages nourishing existing gut bacteria to optimize wellness.
AI Snips
Chapters
Transcript
Episode notes
Reintroduce Fiber Slowly
- If you're fiber-naive, increase fiber slowly by a few grams per week and choose gentle, low-FODMAP options initially.
- Start low-and-slow because rapid increases often cause bloating and indicate the microbiome needs time to adapt.
Low Fiber Shifts Bacteria To Harmful Fuel
- Chronic low-fiber diets push bacteria toward proteolytic fermentation which can damage the gut lining.
- That shift may increase endotoxin, leaky gut, and long-term harms associated with very low-fiber diets.
Treat SIBO Diagnosis With Caution
- SIBO is real but both over- and under-diagnosed due to imperfect tests and broad labels.
- Treating presumed SIBO with antibiotics can worsen microbiome health, so multidisciplinary evaluation is essential.