Mark Hyman, MD · 2025-09-24 · Mark Hyman (host), Shebani Sethi

How To Use Metabolic Psychiatry To Heal Your Anxiety & Depression | Stanford Psychiatrist

31 research-tied claims examined: 1 contradicted 2 overstated 2 context 21 supported 5 unverified

Needs context

0:34:40 Mark Hyman (host)needs contextlow

Approximately 17% of people with schizophrenia have elevated gluten antibodies.

"17% of people with schizophrenia have elevated gluten antibodies, which can drive a lot of brain inflammation and create a lot of neuropsychiatric symptoms." (said at 0:34:40)

Published studies report that a substantial subgroup of individuals with schizophrenia and related disorders test positive for anti-gliadin antibodies (AGA), with reported prevalence rates typically ranging from approximately 20% to over 30% (frequently cited as roughly one-third), encompassing the claimed ~17% figure. While elevated gluten antibodies are associated with systemic immune activation, pro-inflammatory phenotypes, and symptom severity (particularly negative symptoms), claiming that gluten antibodies directly drive brain inflammation and neuropsychiatric symptoms in schizophrenia remains an active hypothesis supported primarily by preliminary biomarker correlations and small pilot trials, rather than definitive causal evidence.

context: Pilot study indicates that a gluten-free diet lowers oxidative stress for gluten-sensitive… (Schizophrenia research 2024) · cited 7x in the literature
"One-third of people with schizophrenia have elevated levels of anti-gliadin antibodies (AGA IgG)." (abstract, background, passage verified)
pubmed full study (doi)
context: T cells are associated with negative symptoms in persons with anti-gliadin antibody positi… (Schizophrenia research 2025) · cited 4x in the literature
"About one-third of persons with schizophrenia and related disorders (SRD) have elevated anti-gliadin IgG antibodies (AGA), associated with gluten sensitivity, increased negative symptoms, greater functional impairments, and limited therapeutic options." (abstract, background, passage verified)
pubmed full study (doi)
context: Sex differences in abnormal gluten response and predictors of gluten sensitivity in patien… (Frontiers in immunology 2025) · cited 1x in the literature
"Elevated titers of anti-gliadin (AGA) IgA were found in 26% of individuals with SZ compared to 22% of HC and elevated AGA IgG in 30% of SZ patients compared to 20% of HC." (abstract, results, passage verified)
pubmed full study (doi)

1:08:44 Shebani Sethineeds contextlow

In autoimmune conditions like PANS and PANDAS that manifest with OCD and depression, antibiotics are effective in improving psychiatric symptoms.

"Actually, the PANS autoimmune with OCD and depression, PANDAS—... It's a—call it PANS clinic at Stanford, but I've seen a lot of cases there where antibiotics are really helpful for the psychiatric symptoms." (said at 1:08:44)

Antibiotics (such as azithromycin) are widely used in specialized clinics for pediatric acute-onset neuropsychiatric syndrome (PANS) and pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS). Clinical trials and reviews offer preliminary support for their role in improving psychiatric symptoms (notably obsessive-compulsive symptoms), but the overall evidence base remains limited. A double-blind pilot randomized controlled trial found significant improvements on the Clinical Global Impressions severity scale (CGI-S) and higher responder rates with azithromycin compared to placebo, though differences on the Children's Yale-Brown Obsessive Compulsive Scale (CY-BOCS) were not statistically significant.

supports: A Double-Blind Randomized Placebo-Controlled Pilot Study of Azithromycin in Youth with Acu… (Journal of child and adolescent psychopharmacology 2017) · cited 57x in the literature
"Participants in the azithromycin group (n = 17) showed significantly greater reductions in OCD severity on the CGI-S OCD than the placebo group (n = 14) posttreatment (p = 0.003), although there were no significant differences on the CY-BOCS. Significantly more participants in the azithromycin condition met treatment responder criteria on the CGI-I OCD at the end of week 4 (41.2%, n = 7) in comparison to the placebo group (7.1%, n = 1; p = 0.045)." (abstract, results, passage verified)
pubmed full study (doi)
context: Antibiotics for PANDAS? Limited Evidence: Review and Putative Mechanisms of Action. (The primary care companion for CNS disorders 2018) · cited 22x in the literature
"Although the single studies conveyed no statistically significant results, there is some evidence for efficacy of antibiotic therapy in reducing neuropsychiatric symptoms in the PANDAS/PANS population. Whereas the use of eradicating antibiotic therapy during active infections in PANDAS/PANS is well established, there is still a need for studies that improve the quality of evidence supporting use of antibiotics in this population independent of ongoing infections." (abstract, results, passage verified)
pubmed full study (doi)

Unverified means no publication matching the claim was located; it does not prove the claim false. Spotted an error? See the corrections policy - disputes from the people quoted are prioritized.