Your body has two brains. And your second brain is your gut. Many think the “gut” is only the stomach - but it’s a network of organs, working together to regulate many different areas of health. When almost half of us suffer with gastrointestinal issues, learning how these organs interact is vital to improving symptoms. On this episode, we’re joined by Dr Karan Rajan. When Karan’s not teaching his 10 million social media followers about common medical myths, he’s an NHS surgeon, operating on people’s bowels. Karan will reveal how our GI issues impact way more than just our poo. Today, we explore how the gut and brain are connected, the lifestyle factors causing gut health issues and why it’s so hard for doctors to understand IBS. 🥑 Make smarter food choices. Become a member at zoe.com - 10% off with code PODCAST 🌱 Try our new plant based wholefood supplement - Daily 30+ *Naturally high in copper which contributes to normal energy yielding metabolism and the normal function of the immune system Follow ZOE on Instagram. Timecodes: 00:00 Your second brain is in your gut 01:39 Quickfire questions 03:50 Why your gut is more than your stomach 05:41 Why is digestion so important? 08:23 How your nervous system impacts gut health 12:17 Common ways we irritate our gut microbiome 17:11 Antibiotics and gut health 23:30 Why gut health starts at birth 27:25 The mystery of IBS 30:19 IBS vs IBD 35:07 Why is bowel cancer on the rise? 37:19 How to keep your gut happy 41:32 Do probiotic supplements work? 45:48 Why fermented foods are so powerful 48:01 Can good gut health improve mental health? 49:30 How often should you go to the toilet? 54:50 Should we hold in farts? Get Karan's book 'This Book Could Save Your Life' here Mentioned in this episode: Worldwide Prevalence and Burden of Functional Gastrointestinal Disorders, Results of Rome Foundation Global Study (2021), published in Gasteroenterology  IBS Facts and Statistics, published by International Foundation for Gastrointestinal Disorders Epidemiological analysis reveals a surge in inflammatory bowel disease among children and adolescents: A global, regional, and national perspective from 1990 to 2019 – insights from the China study (2023, published by Journal of Global Health Other ZOE Science & Nutrition episodes you might like: Why are young people getting colon cancer? Why one in ten children have a food allergy Have feedback or a topic you'd like us to cover? Let us know here. Episode transcripts are available here.