Thesis and framing
- Serious mental disorders have a metabolic component, including impaired bioenergetics.
- Ketogenic metabolic therapy uses dietary carbohydrate restriction to induce nutritional ketosis.
- Mitochondrial function and brain energy metabolism connect metabolic and psychiatric conditions.
Historical and evolutionary context for ketosis
- Fasting can induce nutritional ketosis.
- Long-duration fasting is used as historical precedent for ketosis-based treatment.
- A shift from traditional diets to modern processed diets is linked to a higher metabolic disease burden.
- Ketosis is positioned as a backup metabolic pathway when glucose availability is low.
- “Cancer without sugar the tumor can’t really grow” is stated.
History of ketogenic diet in neurology
- Early ketogenic-diet work at the Mayo Clinic is referenced.
- Wilder is referenced for early ketogenic diet use in epilepsy.
- A report is referenced in which ~75% of infants with refractory epilepsy stopped “fitting” on a no-sugar/no-carbohydrate diet.
- Expansion of antiepileptic medications is linked to a decline in ketogenic diet use.
- Ketogenic therapy is extended (in scope) from epilepsy to cancer, dementia, and psychiatric contexts.
Metabolic–psychiatric overlap in schizophrenia and psychosis
- Insulin shock/coma therapy is referenced as historical psychiatric treatment.
- Insulin shock therapy observations include higher insulin dose requirements in schizophrenia.
- A 2019 Harvard/McLean sibling study is referenced for insulin resistance in psychosis.
- Insulin resistance is linked to psychotic disorders in sibling/unaffected-family findings.
- Antipsychotic metabolic side effects are separated from intrinsic metabolic abnormalities in psychosis.
Metabolic–psychiatric overlap in bipolar disorder
- Historical observations are referenced for metabolic abnormalities in bipolar disorder.
- Kinal (2014) is referenced for insulin resistance in the brain in bipolar disorder.
- Insulin resistance is linked to bipolar disorder in the brain-focused study reference.
Mechanistic model: mitochondria, metabolism, and neurotransmission
- Mitochondrial dysfunction is used as a unifying model for diverse mental disorders.
- Ketosis is linked to altered glutamate/GABA system behavior.
- Ketosis is linked to reduced hunger and reduced carbohydrate cravings.
- Ketosis is linked to reduced inflammatory markers and oxidative stress markers.
- Glucose monitoring is used to evaluate metabolic shifts during intervention.
Prior clinical evidence and case reports referenced
- Chris Palmer case studies are referenced for psychiatric symptom changes on ketogenic diets.
- An open-label Stanford trial is referenced for ketogenic intervention in schizophrenia with an enrollment count in the low 20s.
- Judy Ford is referenced in connection with the Stanford work.
- Albert Danan (France) is referenced for psychiatric ketogenic work and engagement with Stanford work.
- A seminar paper is referenced with Iain Campbell and Ali Hon (Edinburgh).
North Queensland RCT: design and population
- A randomized trial compares ketogenic metabolic therapy with a guideline-based comparator diet.
- The comparator diet is the Australian Guide to Healthy Eating.
- The ketogenic intervention is a “well formulated ketogenic diet” aligned with a Volek protocol.
- Recruitment focuses on stable community patients rather than acute inpatient populations.
- Diagnosis eligibility includes schizophrenia and bipolar disorder.
- Vegetarian participants are eligible and vegan participants are excluded.
- Exclusion criteria include active substance use and other clinician-determined contraindications.
North Queensland RCT: delivery, adherence, and safety workflow
- Diet support includes weekly sessions of approximately one hour, predominantly face-to-face with some phone sessions.
- The intervention focus is diet change rather than medication change.
- A multi-disciplinary team supports delivery.
- Home cooking and supermarket shopping are required for participation.
- Participant expectations include effort and structure, with no “magic” solution.
North Queensland RCT: measurements
- Continuous glucose monitoring is used, including a 2-hour pre-dinner measurement timing rule.
- Blood ketones track ketosis, with a target range of ~0.5–3 and observed peaks around 4–5.
- Weight and body composition are tracked.
- Physical activity is tracked with a wearable device.
- Sleep is tracked with an Oura ring.
- Psychiatric rating scales include PANSS.
- Daily self-reports include mood and energy ratings via visual analog scales.
- Cognitive measures and biomarkers (including stool samples and hair cortisol) are included in the protocol.
Reported trial experience and preliminary outcomes
- Both diet arms produce some weight loss.
- The ketogenic arm is preferred by some participants relative to portion-control guidance.
- The comparator arm is experienced as difficult by some participants.
- Anecdotal reports include reduced anxiety and increased social engagement during ketosis.
- A case example includes long-standing auditory hallucinations resolving during the ketogenic period.
- Interim analysis is pending at the time of the talk.
References