Personal Turning Point
Palmer describes living with OCD, depression, and suicidality while later developing metabolic syndrome during medical training. His failed low-fat approach pushed him to try a low-carbohydrate diet.
Essentials: Diet & Nutrition for Mental Health | Dr. Chris Palmer
Source description
In this Huberman Lab Essentials episode, my guest is Dr. Chris Palmer, MD, a board-certified psychiatrist and Assistant Professor of Psychiatry at Harvard Medical School. We explain how nutrition and metabolism directly affect mental health, including the biological mechanisms …
In this Huberman Lab Essentials episode, my guest is Dr. Chris Palmer, MD, a board-certified psychiatrist and Assistant Professor of Psychiatry at Harvard Medical School. We explain how nutrition and metabolism directly affect mental health, including the biological mechanisms underlying these effects. We also discuss how carbohydrate restriction, ketogenic diets and fasting can improve mood, energy, and, in some cases, treatment-resistant psychiatric conditions. Thank you to our sponsors AG1: https://drinkag1.com/huberman Eight Sleep: https://eightsleep.com/huberman BetterHelp: https://betterhelp.com/huberman
Key Topics
- Personal Turning Point
- Metabolic And Mood Improvements
- From Self-Experiment To Clinical Use
- Ketosis As A Key Threshold
- Schizoaffective Disorder Case
- Medication Tapering Caution
- Different Diet Intensity For Different Conditions
- Ketone Targets By Disorder
- Why Processed Food Matters
- Ketogenic Diet History In Epilepsy
- Fasting And Brain Metabolism
- Evidence From Treatment-Resistant Epilepsy
- Brain Mechanisms Beyond Weight Loss
- Mitochondria As Central Regulators
- Mitochondria And The Stress Response
- Autophagy, Fasting, And Longevity
- Carbohydrate Restriction For Burnout And Anxiety
- Who Needs Medical Support
Metabolic And Mood Improvements
After starting the Atkins diet, Palmer says his blood pressure, lipids, and prediabetes normalized within months. He also noticed better mood, energy, concentration, and sleep.
From Self-Experiment To Clinical Use
In treatment-resistant psychiatry, Palmer began cautiously offering a ketogenic approach to patients when standard options had failed. Some patients experienced strong antidepressant effects once they adhered to the diet.
Ketosis As A Key Threshold
Palmer observed that clinical benefits often tracked with measurable ketosis rather than diet effort alone. Patients who were not producing ketones often did not improve.
Schizoaffective Disorder Case
A man with severe schizoaffective disorder improved dramatically after starting a ketogenic diet. Along with major weight loss, his hallucinations and paranoid delusions substantially diminished.
Medication Tapering Caution
Palmer stresses that reducing psychiatric medication can be difficult and dangerous. He advises doing any taper only under professional supervision.
Different Diet Intensity For Different Conditions
Palmer does not present ketogenic diets as necessary for everyone. For some people, removing highly processed junk food may help, while severe bipolar or psychotic disorders may require deeper ketosis.
Ketone Targets By Disorder
For depression, Palmer looks for blood ketones above roughly 0.8 millimolar. For bipolar disorder and psychotic disorders, he typically aims for levels above 1.5.
Why Processed Food Matters
He argues that highly processed foods high in both sugar and fat are especially harmful for metabolic health. Emerging evidence suggests they may also worsen mental health.
Ketogenic Diet History In Epilepsy
The ketogenic diet was developed in 1921 to mimic fasting as a seizure treatment. Its long clinical history in epilepsy gave Palmer a scientific foothold for psychiatric applications.
Fasting And Brain Metabolism
Fasting can stop seizures in some cases because it shifts brain and body metabolism. The limitation is that fasting is temporary, so the ketogenic diet was designed as a sustainable substitute.
Evidence From Treatment-Resistant Epilepsy
Palmer cites modern epilepsy data showing the diet still helps some patients who fail medications and even surgery. Roughly one third may become seizure-free and another third may improve substantially.
Brain Mechanisms Beyond Weight Loss
He says ketogenic diets affect neurotransmitters, calcium signaling, inflammation, insulin signaling, and the gut microbiome. These effects make the diet relevant to brain function, not just body weight.
Mitochondria As Central Regulators
Palmer frames mitochondria as more than cellular power sources. He argues they help regulate neurotransmitters, hormone production, stress responses, inflammation, and other processes tied to mental illness.
Mitochondria And The Stress Response
He links mitochondrial function to cortisol, adrenaline-related pathways, inflammation, and hippocampal gene expression. This positions mitochondria as a possible bridge connecting many psychiatric findings.
Autophagy, Fasting, And Longevity
Palmer explains mitophagy as a mitochondria-specific form of autophagy that is enhanced by fasting or fasting-mimicking states. He presents calorie restriction as a strong metabolic signal for cellular cleanup and renewal.
Carbohydrate Restriction For Burnout And Anxiety
For people without severe psychiatric illness, Palmer suggests simple carbohydrate restriction may be worth trying first. He gives an example of someone whose chronic anxiety improved without needing ketosis.
Who Needs Medical Support
He draws a line between casual diet changes and therapeutic use for serious psychiatric conditions. People with chronic depression, bipolar disorder, schizophrenia, or multiple medications should work with a clinician.