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FDA allows food manufacturers to self-certify new chemicals as safe without rigorous testing

On Purpose with Jay Shetty · Harvard Psychiatrist REVEALS We Have Been Treating Mental Illness All WRONG · July 3, 2026
FDA allows food manufacturers to self-certify new chemicals as safe without rigorous testing
On Purpose with Jay Shetty
On Purpose with Jay Shetty
Harvard Psychiatrist REVEALS We Have Been Treating Mental Illness All WRONG
"The manufacturer was allowed to declare for themselves that it was safe. The FDA doesn't rigorously test these new chemicals that get added to our food. They rely on the manufacturers. It's an honor system right now in the United States. About 10,000 chemicals are in the US food supply. And many of them have not been rigorously tested for safety."
Dr. Chris Palmer revealed that the FDA does not require rigorous testing of new chemicals added to food. He cited the case of Tara flour in a beef substitute that hospitalized over 400 people with liver failure. Manufacturers can simply declare additives as 'generally recognized as safe' with no proof required, and roughly 10,000 chemicals in the U.S. food supply remain inadequately tested for safety or brain effects.

About this episode

Harvard psychiatrist Dr. Chris Palmer appeared on On Purpose with Jay Shetty to argue that the American mental health crisis is fundamentally a metabolic disorder caused largely by diet, a position that challenges mainstream psychiatry. Palmer, who recently addressed the Senate on the chronic disease epidemic, revealed that the FDA allows food manufacturers to self-certify new chemical additives as safe without rigorous testing, citing a recent case where Tara flour hospitalized over 400 people with liver failure. He stated that most psychiatrists deny diet plays any role in conditions like schizophrenia or bipolar disorder, despite mounting evidence linking metabolic dysfunction to mental illness. Palmer disclosed that only 7% of American adults are metabolically healthy by standard biomarkers, and that 93% have at least one metabolic abnormality. He presented evidence that aspartame, found in over 500 diet products, causes anxiety in mice that persists for two generations even when offspring are never exposed, suggesting epigenetic changes. Most controversially, Palmer reported that thousands of people with severe mental illnesses including schizophrenia and bipolar disorder are achieving full remission using ketogenic diets, sometimes eliminating psychiatric medications entirely. Twenty controlled trials are now underway worldwide testing ketogenic diets for mental health conditions, with over 1,900 participants already enrolled in published studies. Palmer noted the ketogenic diet was developed 100 years ago as an evidence-based epilepsy treatment. He shared that his mother developed a treatment-resistant psychotic disorder that destroyed her life and left their family homeless, motivating his career-long search for better interventions. Palmer emphasized that while psychiatric medications sometimes work, far too many patients don't respond and are told they have incurable chronic disorders. He expressed hope that within 10 to 20 years, the mental health field will undergo a transformation and view current treatment approaches as nearly barbaric.

Key takeaways

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