In the world of healthcare, the United States stands out—not just for its considerable spending, but for the paradoxes that permeate its system.
The U.S. Is #1
The U.S. has led the world in healthcare spending for years, and this trend shows no signs of slowing down. For example, the expenditure per capita in 2014 was $9,402 and by 2022, this number had jumped to $13,493 per capita, amounting to $4.5 trillion, or 17.3% of the GDP.
Despite this high spending, the U.S. ranked only 31st globally in life expectancy in 2015! This scenario paints a picture of a nation that invests heavily in treatment while largely neglecting prevention, creating what many experts describe as a costly “disease care system” rather than a true healthcare system.
Historically, U.S. health policies have prioritized costly medical and surgical interventions over preventive measures that promote long-term health. Screening tests and advanced treatments receive significant attention, while lifestyle-based preventive strategies remain underemphasized. Research indicates that about 60% of premature deaths in the U.S. could be prevented through lifestyle changes—such as avoiding smoking, reducing alcohol intake, increasing physical activity, eating a healthier diet, maintaining a healthy weight, and improving sleep quality.
If implemented broadly, these preventive measures could dramatically reduce healthcare expenditures, particularly on medications like blood pressure pills, cholesterol and blood sugar lowering drugs, and expensive anti-obesity treatments. However, the current system remains largely reactive, focusing on disease management rather than proactive health maintenance.
The Results
The impact of chronic diseases like obesity, cardiovascular issues, mental disorders, neurodegenerative disorders such as Alzheimer’s and Parkinson’s, and cancer is profound and worsening, striking individuals at increasingly younger ages. These conditions share underlying causes linked to poor lifestyle choices that trigger low-grade inflammation throughout the body, setting the stage for various diseases and premature death.
A significant study conducted by Harvard’s T.H. Chan School of Public Health examined the effects of adopting low-risk lifestyle factors on life expectancy. Analyzing data from the Nurses’ Health Study and the Health Professionals Follow-Up Study, the research revealed astonishing results: individuals adhering to five key lifestyle factors—never smoking, maintaining a healthy weight, exercising regularly, consuming alcohol moderately, and eating a nutritious diet—could see their life expectancy at age 50 extend up to 43.1 years for women and 37.6 years for men. This suggests that healthy living can significantly decrease the risk of dying from common causes like heart disease and cancer and from requiring decades of expensive medical and surgical interventions.
Despite these promising findings, the adherence to healthy lifestyles in the U.S. has declined over the decades, from 15% in 1988 to just 8% in 2006. This drop, along with an epidemic of obesity and metabolic diseases, has slowed the gains in life expectancy that might otherwise have been achieved through improvements in living standards and medical treatments.
My Recent Real-World Experience
I had a dramatic real-world experience of these statistics at a recent short-term stay at a resort in Kauai. While during school holiday times, the average age of vacationers at this resort is much younger, during this off season visit, visitors in their late 60s and 70s made up the majority of guests, giving a good insight into the health status of U.S. retirees who generate the biggest percentage of the country’s healthcare expenses.
Even more concerning than the statistics from public health studies, such as the aforementioned one from Harvard, were my firsthand observations at the resort. The majority of guests were obese (many morbidly obese), showed evidence of sarcopenia, frailty and bad posture. Catering to these customers, the food market on the premises contained predominantly ultra-processed food items like candy bars and sugar-sweetened drinks.
The well-equipped gym was empty most of the time with a few exceptions, and the excellent yoga and stretching classes were attended only by a handful of healthy looking people. I suspect that the majority of visitors were on at least one or two medications, and that many of them had undergone hip and knee replacements.
What Can & Should Be Done
The Harvard study echoes observations from other parts of the world, like Singapore, where urban planning that promotes physical activity, social connections and limited access to fast food has contributed to increased life expectancy. This points to a significant opportunity: environmental and policy changes in urban areas could foster healthier lifestyles, extending lifespans beyond what medical interventions can achieve alone.
While the Harvard study has its limitations—including its retrospective nature and reliance on self-reported data—it underscores the critical role of accessible, inexpensive lifestyle changes in improving health outcomes. These changes should be emphasized to patients before turning to an ever-growing list of medications.
Although the U.S. healthcare system excels in medical innovation and treatment, there’s a compelling case for a paradigm shift towards prevention and healthier living. Such a shift could not only save lives, but also reduce healthcare costs dramatically, presenting a win-win scenario for all stakeholders in the healthcare ecosystem.
This reimagining of healthcare is not just a necessity, but an urgent call to action to adopt lifestyle changes that could markedly improve the nation’s health landscape. There is a unique opportunity for such a paradigm shift with the recent publicity generated by the Make America Healthy Again (MAHA) movement.
The crucial question remains: should those leading the MAHA movement—despite lacking credible healthcare expertise and rejecting proven preventive measures like vaccinations—be trusted with this responsibility?

Emeran Mayer, MD Is a Distinguished Research Professor in the Departments of Medicine, Physiology and Psychiatry at the David Geffen School of Medicine at UCLA, the Executive Director of the G. Oppenheimer Center for Neurobiology of Stress and Resilience and the Founding Director of the Goodman-Luskin Microbiome Center at UCLA.