Can food improve brain health, memory and mood? In this episode, Prof Felice Jacka and Prof Tim Spector explore how diet, the gut microbiome and fermented foods may affect your mood, brain function and dementia risk. Drawing on clinical trials and research involving more than 10 million people, they explain why what you eat could have a much bigger impact on your brain than most people realise, and what the latest science suggests you can do about it. Felice, who helped create the field of nutritional psychiatry, explains how food influences the brain through the gut microbiome and inflammation. She and Tim explore why some foods change brain function, which support brain health, what the evidence says about ultra-processed foods, and why diet is becoming an increasingly important part of research on brain and mental health. Learn which foods to eat more often, which foods to reduce, and simple, affordable ways to build meals that support your gut, mood and long-term brain health. From whole grains and legumes to fermented foods and everyday supermarket and grocery store choices, by the end of the episode, you’ll have realistic advice that’s easy to put into practice today. If the food you eat today helps shape your brain tomorrow, what small change could make the biggest difference over the next year? 🌱 Try our science-backed and tasty wholefood supplement Daily30: https://zoe.com/daily30?utm_medium=zoe_podcast&utm_source=youtube&utm_campaign=d30 🌿Let your gut microbes snack on the ZOE Gut Health Bar | https://zoe.com/snackbar?utm_medium=zoe_podcast&utm_source=youtube&utm_campaign=GHB Get our brand-new app and Gut Health Test designed by world-leading gut health and nutrition scientists to build healthy eating habits 👉 Join ZOE: https://zoe.com/buymembership?utm_medium=zoe_podcast&utm_source=youtube&utm_campaign=BAU Follow ZOE on Instagram | https://www.instagram.com/zoe/ Timecodes 📚Books by our ZOE Scientists The Food For Life Cookbook | https://amzn.to/4amfIMX Every Body Should Know This by Dr Federica Amati | https://amzn.to/4blJsLg The Appetite Reset by Dr Federica Amati | https://amzn.to/4aBakbR Food For Life by Prof. Tim Spector | https://amzn.to/4amZinu Good Mood Food (preorder) by Prof. Tim Spector | https://amzn.to/4l9oXat Free resources from ZOE: The Smart Snacking Guide: How to feed your gut, fuel your day, and snack without guilt | http://ZOE.com/snacking-2026?utm_medium=zoe_podcast&utm_source=youtube&utm_campaign=snacking Eating for Better Brain Health: Your brain-gut blueprint | https://ZOE.com/brainhealth?utm_medium=zoe_podcast&utm_source=youtube&utm_campaign=betterbrainhealth Mentioned in today's episode The 'SMILES' trial, BMC Medicine (2017) | https://pubmed.ncbi.nlm.nih.gov/28137247/ Mood Disorders: The Gut Bacteriome and Beyond, Biological Psychiatry (2024) | https://pubmed.ncbi.nlm.nih.gov/37661007/ ZOE study: Fermented food improves mood, energy, and hunger | https://zoe.com/learn/zoe-study-fermented-food Effects of a probiotic fermented dairy product on the brain, Gut microbiota (2025) | https://gut.bmj.com/content/75/3/511 Associations between diet quality and depressed mood in adolescents, ANZJP (2010) | https://pubmed.ncbi.nlm.nih.gov/20397785/ Ultra-processed food exposure and adverse health outcomes, BMJ (2024) | https://www.bmj.com/content/384/bmj-2023-077310 Folic acid, ageing, depression, and dementia, BMJ (2002) | https://pmc.ncbi.nlm.nih.gov/articles/PMC1123448/ Have feedback or a topic you'd like us to cover? Let us know here: https://gf6hx47iu5g.typeform.com/topicsuggestion Episode transcripts are available here: https://zoe.com/learn/category/podcasts