Imagine an American family sitting down to a Sunday dinner of roast chicken, a green salad and steamed vegetables. While most physicians would agree this is a healthy meal, it bears little resemblance to the standard American diet. Today, more than half of what Americans consume consists of ultra-processed foods, products often high in sugar, sodium and unhealthy fats yet low in protein and essential nutrients.
The consequences are clear: almost three-quarters of American adults are overweight and more than 40% are obese. Moreover, three-quarters of American adults have at least one chronic health condition and more than half have multiple chronic diseases such as diabetes, heart disease and certain cancers.
As a medical school dean, I believe we must confront a difficult truth: American medicine has become extraordinarily skilled at treating advanced disease, yet minimally effective at preventing it. If we are serious about improving the nation’s health and bending the health care cost curve, prevention must move to the center of medical practice. That shift begins with how we educate future physicians.
Few interventions rival proper nutrition in its ability to influence long-term health. Dietary patterns shape metabolic function, cardiovascular risk, inflammation, immune response, and cognitive well-being — key determinants of future health. Yet historically, nutrition education has not received the attention it deserves in medical training.
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