How your metabolism could alter your mental health

August 26, 2026

AI Summary

5 min read

For a century, the medical establishment has largely treated the brain and the body as separate domains—psychiatry on one side, metabolic medicine on the other. But Dr. Shibani Sethy, a metabolic psychiatrist, argues this division is artificial and harmful. Her work began with a patient in 2009 who had schizophrenia and wanted to lose weight. After trying every available psychiatric medication over 20 years, the patient underwent a dietary intervention. Her schizophrenia symptoms improved. Sethy was skeptical, but digging through historical medical records revealed a forgotten truth: a century ago, clinicians understood a deep connection between metabolism—how the body turns food into energy—and brain health. Today, she is formally reviving that connection under the discipline of metabolic psychiatry.

The metabolic roots of mental illness

Continue reading the full summary in the app — free to try.

Read Full Summary →

Free • No credit card required

Listen to Audio Summary Open in App

Never miss an episode of Short Wave

Get every new episode summarized in your inbox — free, ~5 minutes to read.

No spam. Unsubscribe anytime.

What you'll learn

1 (00:22) **A Patient Who Changed Everything** - Dr. Shebani Sethi describes meeting a patient with schizophrenia who improved after a dietary weight-loss intervention, sparking her curiosity.
2 (02:22) **Episode Thesis: Metabolism and Mental Health** - The episode introduces the core idea that metabolic dysfunction may underlie certain mental health conditions.
3 (03:48) **Schizophrenia and Cerebral Glucose Hypometabolism** - Dr. Sethi explains that insulin and glucose signaling issues appear before a schizophrenia diagnosis, even before medication.
4 (05:16) **Depression, Bipolar Disorder, and Insulin Resistance** - The metabolic connections extend to depression and bipolar disorder, with overlapping but distinct mechanisms.
5 (07:15) **Ketogenic Metabolic Therapy (KMT) Explained** - Dr. Sethi describes KMT as a medically supervised intervention, distinct from the fad "keto diet."
6 (09:10) **What Happens in the Brain During Ketosis** - The therapy is anti-inflammatory and shows improvements in both metabolic and psychiatric markers.
7 (10:17) **Addressing Concerns About Long-Term Keto Risks** - Dr. Sethi responds to a mouse study linking keto diets to fatty liver disease and poor blood sugar regulation.

+ Full timestamped outline available in the app

Show Notes

In 2009, medical student Shebani Sethi watched a patient in a weight loss program make a remarkable recovery. The dietary intervention she underwent alleviated her schizophrenia symptoms, something the woman had tried – and failed – to treat with medication for years. That experience sent Shebani down a medical path that would lead her to treating mental health in a radically different way. Today host Emily Kwong talks to Shebani about the emerging field of metabolic psychiatry and how ketogenic metabolic therapy may treat schizophrenia, bipolar disorder and depression.

Read Shebani’s article on metabolic psychiatry here.

Interested in more lifestyle science? Email us your question at [email protected].

Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org

See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.

NPR Privacy Policy