Why do we get “butterflies in the stomach” when we’re nervous? We have all felt that at some point in our lives, right? It’s because our gut microbiome directly communicates with the mind. That’s why the gut is often called “the second brain”.

In this episode, host Srirupa Ray, an Assistant Editor with TOI, dives deep into the fascinating world of the gut-brain axis. Joining the conversation is Dr Prateek Sharma, a leading gastroenterologist and professor at the University of Kansas, United States. Dr Sharma, also president of the American Society for Gastrointestinal Endoscopy, explains more about that “gut feeling” we all get, and how a healthy gut can keep both the body and mind on track.

While acknowledging that 95% of the body’s serotonin (happy hormone) is associated with the gut, Dr Sharma clarifies right at the beginning that a healthy gut isn’t a silver bullet for happiness. Instead, mood and well-being are part of a complex “team effort” that relies heavily on sleep, stress management, and physical activity. Under the microscope, a truly healthy gut is defined by three pillars: diversity, stability, and resilience.

The conversation also tackles modern dietary habits, from midnight cravings and the global “GLP-1 weight loss drug boom” to the widespread over-reliance on over-the-counter acidity pills and packaged probiotics. Dr Sharma dispels common social media myths regarding “gut detoxes”, emphasising that India’s rich tradition of fermented foods — like curd, idli, and kanji — offers far superior, natural benefits compared to processed supplements.

Ultimately, the episode highlights that a sluggish gut cannot be fixed by diet alone. True digestive wellness requires looking “beyond the kitchen” to establish consistency and simplicity. To keep our second brain functioning at its best, Dr Sharma champions a return to foundational, non-food lifestyle rituals: honouring regular meal times, prioritising sleep, avoiding the traps of ultra-processed foods, and practicing the time-tested habit of taking a short, gentle walk after meals.

Don’t forget to listen to the nutrition power tip in the end, by nutritionist Sangeetha Aiyer (https://www.rewriteyourstory.in/).

Chapters

00:14 – Demystifying the "Gut Feeling"

01:05 – Physical Reactions to Stress

01:32 – Serotonin and the Gut-Happiness Link

01:52 – The Complexity of Mood and Happiness

03:35 – Anatomy of a Healthy Gut

05:51 – Do Microbes Control Our Food Cravings?

06:55 – Cravings as a Team Effort

08:24 – Beyond Clean Eating: Mindful Practices

09:40 – The Gut’s Love for Rhythm and Movement

11:22 – The Chicken-and-Egg Stress Dilemma

12:28 – Identifying Stress-Induced Symptoms

14:18 – The Global Issue of OTC Pill Abuse

16:16 – Dispel the Myth & Spot the Warning Signs

18:05 – Balancing Protein, Fiber, and Water

20:35 – The GLP-1 Weight Loss Boom