This podcast episode explores the impact of diet on mental health, focusing on the specific foods that can negatively affect mental well-being. The episode discusses the flaws of nutrition epidemiology studies and highlights the limitations of relying on these studies for making informed health decisions. It also criticizes biased research and misleading dietary recommendations in the field of nutrition science. The complexities of plant-based diets and the importance of a whole foods approach are discussed, as well as the potential risks and benefits of different dietary approaches for mental health. The episode delves into the emerging field of nutritional psychiatry and the potential benefits of the ketogenic diet for brain health. Overall, the episode emphasizes the need for personalized and evidence-based nutrition advice to support mental well-being.