On Purpose with Jay Shetty
On Purpose with Jay Shetty

Dr. Chris Palmer: Your Diet Could Be Causing Anxiety, Depression & Brain Fog (6 Simple Changes to Make Today)

July 03, 2026 • 1h 21m

Summary

⏱️ 11 min read

Overview

In this episode, psychiatrist Dr. Chris Palmer discusses his groundbreaking work connecting metabolic health to mental illness. He explains how diet, particularly ultra-processed foods, impacts brain function and mental health conditions ranging from anxiety to schizophrenia. Palmer shares his personal journey inspired by his mother's struggle with psychosis and presents evidence for using metabolic interventions like ketogenic diets to treat severe mental illnesses, challenging traditional psychiatric approaches.

The Senate Address and Chronic Disease Epidemic

Dr. Palmer describes addressing the Senate about the overlooked connection between metabolic health and mental illness. He explains that while obesity and diabetes epidemics are widely recognized, the parallel mental health crisis affecting conditions from ADHD to schizophrenia is equally severe but less understood. Both physical and mental health epidemics share a common root in metabolic dysfunction, yet current approaches aren't working and require a paradigm shift in how we view and treat these interconnected conditions.

  • Mental health epidemic is occurring concurrently with obesity and diabetes epidemics, with both rooted in metabolic dysfunction
  • Rates are skyrocketing across diagnoses including autism, ADHD, anxiety, depression, bipolar disorder, and schizophrenia
  • Current treatments aren't working and we need a paradigm shift in addressing chronic diseases
" What we're doing to address these chronic diseases isn't working. And we need a paradigm shift. "

Diet's Overlooked Role in Mental Health

Palmer reveals the shocking disconnect in psychiatry: most practitioners dismiss nutrition as irrelevant to mental health despite overwhelming evidence. He explains that what we eat literally becomes our brain and neurotransmitters, affecting cellular function throughout the body. The neuroscience literature consistently points to metabolic dysfunction across mental health conditions, yet this connection is ignored. He argues that the same metabolic issues causing heart disease and diabetes are also impairing brain function, manifesting as mental illness.

  • Most psychiatrists and neuroscientists believe diet plays no role in mental health conditions
  • Mental health field attributes conditions to genetics, biology, or psychological trauma while ignoring nutrition
  • Metabolism is foundational to all living organisms and undeniably connected to nutrition
  • People with metabolic disorders are more likely to have mental health conditions and vice versa
" Most psychiatrists or neuroscientists will say there's no way that what we eat would play a role in something like depression, bipolar disorder, or schizophrenia. "

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