Our food has been making us sick.
This overdue acknowledgement was at the heart of the recently updated dietary guidelines. The recent commitment by the Department of Health and Human Services and dozens of medical schools to require meaningful nutrition training for future doctors reflects a growing recognition that we need to focus on the root causes of chronic metabolic diseases.
While conditions such as diabetes and high cholesterol are among the most common conditions Americans face, medical education rarely has addressed the role nutrition plays in those conditions. That status quo will no longer be acceptable. Understanding how diet affects the biology of disease will be a required part of the scientific training of physicians.
Nutritionists and dietitians play an important role in helping patients change behavior. Managing diet in daily life can be difficult, and these specialists are essential in helping patients make better choices. But lifestyle counseling and metabolic science are different disciplines. Physicians are trained to understand disease mechanisms, and an education that does not include nutrition means that understanding will at best be incomplete.
No one questions that premed students must complete coursework in the basic sciences, which lay the groundwork for more advanced studies that teach the mechanisms of disease. Medical students are expected to do more than follow algorithms or recognize patterns; they are trained to understand the underlying pathophysiology associated with disease. That foundation allows physicians to reason through cases that do not fit neatly into a guideline. Medical training has always expected that trainees will gain an understanding of the biology of how drugs work. Formalizing nutrition training in medical school means applying that same scientific framework to food, so that physicians will understand how diet influences disease at the cellular level.
Even with optimal nutrition, people will continue to be diagnosed with diseases that need medication. Pharmaceutical therapies remain powerful tools for managing metabolic disease. But it is not possible to provide optimal care for chronic disease with medication alone; diet has to be part of any comprehensive treatment plan. This is more than just the knowledge that food can both contribute to disease and also be part of its treatment. The common practice of prescribing multiple medications for diseases like diabetes and high cholesterol carries with it the responsibility of understanding how those drugs interact with each other. We cannot expect new doctors to consider the possible impact of food in that equation if they aren’t taught the biochemistry of nutrition with the same seriousness we expect from their training in pharmacology.
Food is different from other lifestyle factors physicians discuss with patients. Healthful choices, like exercise, and harmful ones, like alcohol and tobacco, are optional. Food is not. Despite the fact that food is the one lifestyle exposure that cannot be avoided, medical education has treated diet as peripheral to the scientific understanding of disease, rather than as an inescapable part of the biological framework that governs metabolism. Metabolic diseases like diabetes dominate American medicine. It makes little sense for one of their most consistent biological drivers to be an afterthought. The hour or two of coursework in nutrition that many medical schools have offered (for schools that offered any training at all) hasn’t been close to enough.
Making nutrition a core component of medical education is not about replacing dietitians or expecting that physicians will become experts at providing detailed meal plans. It is about ensuring that physicians graduate with an understanding of how food interacts with the metabolic systems they are trained to treat with medication. Secretary Kennedy’s push to bring nutrition into medical training reflects a broader recognition that the United States cannot address the epidemic of chronic metabolic disease solely by managing its consequences. A medical system serious about promoting health must also understand the biological factors that shape it. Teaching future physicians the science of nutrition alongside pharmacology is an important step toward closing a gap that never should have existed in the first place.
