Whopper of the Week: RFK Jr.’s Diet Cure for Diabetes Is Too Simplistic

Whopper of the Week: 

RFK JR.'S DIET CURE FOR DIABETES IS TOO SIMPLISTIC

In April, the Arizona Mirror reported that Secretary of Health Kennedy told Native American tribal leaders “Type 2 diabetes is curable. You can reverse the diagnosis by changing the food source.” Speaking before the Tribal Self-Governance Conference in Arizona as part of his “Take Back Your Health Tour”, Kennedy displayed his inverted food pyramid graphic and explained that “cutting out ultra-processed food would reverse high rates of diabetes” among American Indians and Alaska Natives.

SUMMARY

Secretary Kennedy is right that diet plays a role in diabetes risk and management, but his overly simplistic framework for prevention and cure is incorrect. Ultra-processed foods are associated with increased diabetes risk and complications. However, the optimal nutritional approach to diabetes, according to the Nurses Health Study and Health Professionals’ Follow-Up Study, is a diet “rich in fruit and vegetables, whole grains, and nuts and legumes, but lower in red and processed meats, refined grains, and sugar-sweetened beverages.” Swapping out ultra-processed foods for steak, or following Kennedy’s inverted dietary pyramid will not lower diabetes risk.

WHY IS THIS A WHOPPER?

Type 2 diabetes mellitus is a progressive, chronic disease with complex causes. Risk factors include family history, obesity, quality of diet, lack of exercise, tobacco use, gestational diabetes, and chronic stress. Upstream from these clinical factors are  social determinants of health, including socioeconomic status, neighborhood and the physical environment, the food environment, health care, and the quality of social relationships, all of which help to explain why persons of color have higher prevalence and poorer outcomes for diabetes and why simplistic dietary changes are not the answer.

To date there are no studies which show that elimination of ultra processed foods alone is effective at preventing or reversing diabetes. In persons with pre-diabetes, the CDC and NIH funded Diabetes Prevention Program demonstrated that two interventions help prevent the onset of diabetes: 1) lifestyle changes (diet, exercise, and group support) targeting weight loss of 7 % of bodyweight; or 2) the medication metformin. The lifestyle program had better outcomes than metformin. Remission of diabetes is more likely early in the course of diabetes for people not requiring insulin and generally requires at least 10% weight reduction, which is difficult to attain or maintain by dietary changes alone. Elimination of ultra processed foods usually results in modest weight loss. Kennedy overstates the truth about the role of diet and ultra processed foods in the prevention and disease management of diabetes.  
 

WHY DOES IT MATTER?

Type 2 diabetes is a serious public health threat: it affects nearly 10% of American adults and a growing number of youth. Medical care for people with diabetes now accounts for 25% of total health care spending in the United States.

While Kennedy’s message in “Take Back Your Health” falls short rhetorically, Kennedy and Trump's policies are failing us materially by reducing access to healthy food and healthcare services. The One Big Beautiful Bill reduced SNAP food benefits, denying food access and security to millions of Americans; cuts to the Local Food for Schools initiative make it more difficult for schools to buy fresh locally-farmed foods; while the Administration's economic policies have dramatically increased price of groceries for all Americans. 

Under Kennedy’s watch, millions of Americans are also losing access to health care through cuts to Medicaid, the Children’s Health Insurance Program (CHIP), and lower subsidies for the Affordable Care Act insurance plans. The DOGE attacks on the federal workforce also worsened retention and recruitment of health care workers in the Indian Health Service and Veteran Affairs. Access to primary and specialist care is critical for people with or at risk for diabetes, because medication management early in the course of diabetes can lower mortality and prevent complications. 

Kennedy is doing more than misunderstanding and simplifying the science. He is promoting inaccurate “cures” while the Trump administration is actively dismantling the public health infrastructure needed to effectively address diabetes. We need leadership at HHS that understands commercial, social and personal determinants of health, promotes access to high quality healthcare, and empowers individuals and communities to maximize well-being. Instead Secretary Kennedy makes grandiose, simplistic pronouncements predicated on selective half-truths. 

Contributions from: David Goldberg, M.D., Aurora Horstkamp, M.D., Miriam Rabkin, M.D.,  Benedicte Callan, Ph.D.