Diet as Medicine: Health Secretary’s Bold Claims Spark Debate
In a push to elevate the conversation around healthy eating, the nation’s Health Secretary, Robert F. Kennedy Jr., has amplified his message beyond the simple call to “eat real food” for disease prevention. Recent public appearances and podcast discussions have seen him assert that diet holds the potential to “cure” conditions like schizophrenia and diabetes, and even enable individuals to overcome bipolar disorder diagnoses. While researchers acknowledge the significant and promising role of nutrition in managing various illnesses, many experts caution that Kennedy’s pronouncements often overstate the current scientific evidence.
“Food is medicine, and you can heal yourself with a good diet,” Kennedy remarked during an appearance on comedian Theo Von’s “This Past Weekend” podcast earlier this year. This sentiment resonates with a broader movement, including allies of Kennedy’s “Make America Healthy Again” initiative, which advocates for greater attention to the impact of food on overall health – a cause that has garnered some bipartisan backing.
Scientists largely concur that diet plays a substantial role in the development of certain diseases and is a valuable tool in their treatment. However, public health advocates express concern that Kennedy’s tendency to cherry-pick and misrepresent scientific findings, a pattern also observed in his discourse on vaccine science, is being applied to dietary health. This approach, they argue, is both misleading and potentially harmful.
Kayla Hancock, director of a public health project at the advocacy group Protect Our Care, described Kennedy’s recent statements as indicative of a pattern of being “incredibly careless and irresponsible” when discussing health matters.
Dr. Theresa Miskimen Rivera, president of the American Psychiatric Association, voiced apprehension that Kennedy’s language could inadvertently encourage patients to forgo professional medical treatment in favour of self-medicating with diet alone. “The concern always is that people can have hope and they might interpret that as, ‘Well, I don’t need medication. I do not need treatment. I just need to follow the diet,'” Dr. Rivera explained.
Overstating the Evidence: Diet and Psychiatric Disorders
During a speech at the Tennessee Capitol in early February, Kennedy referenced the work of Dr. Christopher Palmer, a researcher at Harvard Medical School. Palmer’s 2019 research on two patients with schizophrenia who experienced symptom remission on a high-fat, low-carbohydrate ketogenic diet was cited by Kennedy, who stated that Palmer had “cured schizophrenia using keto diets.”
Dr. Palmer himself has refuted this characterisation, stating, “As much as I wish we had cures for mental illness or other chronic diseases, it is important that we use more precise language.” He prefers the term “remission” and stresses the need for accurate scientific communication.
In the same speech, and later on Joe Rogan’s podcast, Kennedy alluded to studies where individuals reportedly lost their bipolar disorder diagnosis by altering their diet, suggesting a significant paper on these findings was forthcoming. Kennedy’s spokesperson, Andrew Nixon, indicated that these comments referred to a “growing body of research” on the subject, including a study at the University of California, Los Angeles, examining the impact of a ketogenic diet on adolescents with bipolar disorder. However, this study is still actively recruiting participants and is not expected to conclude until March 2027, with any potential publication following several months later.
Dr. Rivera of the American Psychiatric Association maintains that Kennedy’s claims go beyond the existing evidence. She points out that studies investigating the role of ketogenic and other diets in psychiatric disorders have often been small-scale, anecdotal, or pilot studies, with many lacking a control group for comparison with standard diets. “At this point, it’s premature. We cannot draw definitive conclusions,” Dr. Rivera stated. “There is not enough evidence to recommend a specific diet or as a standalone, without medication such as antipsychotics or mood stabilizers.”
Dr. Palmer acknowledged that research into the effects of ketogenic and other dietary interventions on psychiatric disorders is indeed expanding. He noted that 20 controlled clinical trials are currently underway, focusing on the ketogenic diet for severe mental illness, with results from two of these trials anticipated for publication within the next year. While enthusiastic about the potential of diet as a therapeutic avenue for serious psychiatric conditions, Dr. Palmer strongly advises patients with mental illness to consult with their healthcare providers and cautioned against self-treatment. “I want to implore patients: Please do not stop your medications on your own,” he urged. “Please do not even try a ketogenic diet on your own as a treatment for schizophrenia or bipolar disorder.”
Divided Opinions on Diabetes and Diet
Kennedy’s assertion on the “This Past Weekend” podcast that “most diabetes can be cured through diet” has also drawn considerable attention and varied expert opinions. Some health professionals believe he has overstated the impact of diet.
Dr. Willa Hsueh, an endocrinologist and researcher at Ohio State University, clarified that Type 1 diabetes, an autoimmune condition, cannot be cured by diet alone. While a healthy diet and exercise are crucial for managing Type 2 diabetes, she noted that completely reversing the condition through these lifestyle changes alone can be challenging for many individuals. “The secretary is not wrong that it can work,” Dr. Hsueh commented. “But it’s not common for people to cure themselves … by diet alone.”
Conversely, other experts have defended Kennedy’s statements regarding diabetes, a condition affecting approximately 40 million people in the United States. Dr. Dariush Mozaffarian, a cardiologist and director of the Food is Medicine Institute at Tufts University, suggested that a healthy diet can indeed help “most individuals” with Type 2 diabetes to lower their blood sugar, reverse symptoms, and potentially discontinue their medication.
“Whether you consider that a cure or remission, that’s medical speak, right?” Dr. Mozaffarian remarked, acknowledging that Kennedy may not always be “perfectly precise in the terminology and there could be risks to that.” Nevertheless, he welcomed the increased focus on the role of diet in addressing chronic diseases. “I’d rather exaggerate and get some attention and action than keep doing what we’re doing, which is have millions of Americans suffering from diet-related diseases,” he added.
The Push for Greater Focus on Nutrition
Supporters of the MAHA Institute, an organisation aligned with Kennedy’s views, advocate for a more prominent role for nutrition in healthcare. Mark Gorton, president of the MAHA Institute, while not specifically familiar with the studies Kennedy cited, emphasised that nutrition has been “an incredibly overlooked area in our medical system for decades.” He believes that prioritising diet and healthy living is essential, contrasting it with the current system’s focus on medicating individuals with chronic illnesses.
Kody Green, a mental health advocate living with schizophrenia, expressed support for healthy eating but stressed the necessity of psychiatric medications in his own experience. He voiced concerns that Kennedy’s pronouncements could discourage schizophrenia patients from pursuing proven treatments that already face stigma. “For some people, maybe food can help with the issues they have, but schizophrenia is a very serious mental illness,” Green stated. “Until further research is done, making claims like that can be really dangerous to people in my community.”
