Of course I'm going to love a guest who wrote a book called "Let's Talk Shit." This chat with world-renowned gut health, microbiome expert and let's be honest - poo-ologist - Dr. Sabine Hazan, was eye-opening. Among other fascinating things, we spoke about Autistic identical twins, who were both nonverbal and aggressive, who had identical elevated harmful microbes. After targeted treatment (faecal transplants) to restore their microbiomes, these twins, now 7, are fully verbal and non-aggressive. Dr. Hazan emphasizes: "The microbiome is the key. These microbes travel from the gut to the brain via the vagus nerve, influencing behaviour.” If you're not up for poo talk, definitely don't listen. Lol.