Can the Keto Diet Help Schizophrenia? Harvard Psychiatrist Weighs In

A Harvard psychiatrist has clarified that claims about the ketogenic diet 'curing' schizophrenia are not accurate. Dr. Christopher M. Palmer, who has researched the diet's effects on mental health, met with Robert F. Kennedy Jr. in September 2024 to discuss nutrition. Their conversation followed Kennedy's statements about the diet's potential to treat serious psychiatric conditions.

While some patients have shown improvement, most psychiatrists remain cautious due to limited evidence.

Dr. Palmer first explored the keto diet as a weight-loss tool for a patient with schizoaffective disorder. After two months, the patient reported fewer hallucinations and delusions. This unexpected outcome led Palmer to document two cases in 2019 where schizophrenia patients achieved full remission and stopped antipsychotic drugs.

Despite these results, Palmer has never claimed the diet can cure schizophrenia. He emphasises that any use of ketogenic therapy must happen under strict medical supervision. Most psychiatrists share this caution, pointing to the lack of large-scale, consistent research.

Currently, around 20 clinical trials are testing ketogenic treatments for psychiatric disorders. Two of these are randomised controlled trials focused on schizophrenia. Wellcome, a global health foundation, is also funding a major British study on the topic. The diet itself is already proven for epilepsy and weight loss, but its broader mental health benefits remain under investigation.

Palmer's meeting with Kennedy took place at a nutrition roundtable hosted by Sen. Ron Johnson. There, he clarified that Kennedy's assertions about a 'cure' were misleading and oversimplified.

The keto diet shows potential in managing some psychiatric symptoms, but no definitive cure exists. Ongoing trials may provide clearer answers in the coming years. For now, medical professionals urge caution and supervised use of the diet in mental health treatment.