RFK Jr. Says Keto Can Cure Schizophrenia. Doctors Say Not So Fast.
Robert F. Kennedy Jr. kicked off his "Take Back Your Health" tour in Nashville last week and made some pretty bold claims about diet and mental illness — including that a ketogenic diet can cure schizophrenia.
Doctors pushed back almost immediately. Here's where the science actually stands.
What Kennedy Said
Speaking to promote new dietary guidelines, Kennedy told the crowd that food is driving mental illness in America and that a doctor at Harvard has cured schizophrenia using keto diets. He also said people are losing their bipolar diagnoses just by changing what they eat.
He likely meant to reference Dr. Chris Palmer, who has done research on ketogenic diets and mental illness. The "Harvard" detail appears to have been a misspeak.
His broader message — eat real food, more protein, more vegetables, and fewer processed foods — isn't wrong. It's the word "cure" that doctors take serious issue with.
What Doctors Actually Say
There is legitimate ongoing research into nutrition and mental health. That part is real. Diet does appear to play a role in mental health outcomes, and the connection between what we eat and how we feel is getting more scientific attention than it used to.
But cure? That's a different word entirely.
"The word 'cured' means not having a symptom," said Dr. Drew Ramsey, a psychiatrist and leader in nutritional psychiatry. "These illnesses are in our genes, and so until we have gene therapy, we're not going to cure mental illness."
Dr. Chris Palmer's research into keto and mental illness involves very small sample sizes and short time windows — weeks or months, not years. There are zero long-term studies on what keto does for conditions like schizophrenia or bipolar disorder over time.
"Even the most recent research Kennedy is citing says these exact same things — that it's too soon to have this as a clinical recommendation," said Dr. Brooke Resch, a Minnesota psychiatrist.
So Does Diet Matter at All?
Yes — just not as a standalone fix.
Ramsey said dietary changes, including keto in some cases, can be genuinely useful when layered on top of existing treatment. Think of it as something that can boost outcomes alongside medication, therapy, and exercise — not something that replaces any of those things.
"We are using dietary interventions alongside our evidence-based treatments, not to replace them," Ramsey said.
The Mediterranean diet actually has the most scientific backing of any dietary approach for mental health right now, particularly for depression. Keto shows some early promise for bipolar disorder and schizophrenia specifically, but the research isn't there yet to make sweeping claims about it.
There's also a flip side worth noting. Keto is a heavy, meat-based diet. That raises cardiovascular risk. And increased cardiovascular risk is itself a risk factor for depression and serious mental illness. So telling someone with untreated schizophrenia to ditch their medication for bacon and avocados could genuinely cause harm.
The Bottom Line
Eating better is good advice. Fewer processed foods, more vegetables, more protein — nobody in medicine is arguing against that. But Kennedy calling diet a "cure" for schizophrenia or bipolar disorder is a stretch that the researchers he's citing wouldn't even make themselves.
Mental illness is complicated, lifelong, and rooted in genetics and brain chemistry. Diet can be one useful piece of a treatment plan. It is not the whole plan, and telling people otherwise risks pushing them away from treatments that actually work.
"I'm going to pick lithium over ketogenic diets every day until the evidence says otherwise," Ramsey said.
That pretty much sums it up.
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