Rising Burden and Future Projections of Tobacco-Associated Ischemic Heart Disease Mortality in the United States: A CDC WONDER and Joinpoint Regression Analysis, 1999–2035

Heart disease remains the leading cause of death globally, a relentless force that claims millions of lives every year. While medical science has made great strides in preventing and treating blocked arteries, one factor continues to drive these tragedies: tobacco use. Cigarette smoke does not merely irritate the lungs; it attacks the heart's plumbing directly. It damages the inner lining of blood vessels, triggers inflammation, and makes the blood more likely to clot, creating a perfect storm for heart attacks. For decades, public health officials have watched the overall number of heart disease deaths in the United States fall, a sign that prevention efforts are working. Yet, a critical question remained unanswered: how is the burden of heart disease specifically linked to tobacco use changing across different groups of people, and where is it heading in the future?

To answer this, researchers turned to a massive digital archive of death records from the Centers for Disease Control and Prevention. They looked at every adult in the United States aged 25 and older who died between 1999 and 2024. Their focus was narrow but vital: they only counted deaths where heart disease was the primary cause and where the death certificate explicitly noted that the person used tobacco. By filtering the data this way, the team could see the specific toll of smoking on the heart, separate from other causes. They then used statistical tools to trace how these numbers changed year by year, looking for patterns in age, gender, race, and location, and finally, they used those patterns to project what might happen over the next decade.

The story the data tells is one of a rising tide that has only recently begun to slow. From 1999 to 2005, the rate of tobacco-related heart disease deaths surged dramatically. This rapid climb continued, though at a more measured pace, until 2020. It was only in the last few years of the study, from 2020 to 2024, that the numbers showed a slight, though not statistically certain, dip. Despite this recent pause, the overall trend from the start of the study to the end was a significant increase. The researchers calculated that over this entire period, the age-adjusted death rate rose by nearly 9 percent each year on average. This means that for every 100,000 people, the number of deaths linked to tobacco and heart disease grew steadily, defying the general national trend of declining heart disease mortality.

When the researchers broke down the numbers by who was dying, stark differences emerged. Men consistently faced a higher risk than women, with the death rate for men remaining significantly higher throughout the entire study. However, the situation for women was also worsening, with a sharp rise in the early 2000s that leveled off only recently. Age played an even more powerful role. The risk of dying from tobacco-related heart disease climbed steadily with every decade of life. The most dramatic increases were seen in the oldest groups, particularly those over 85, who accumulated decades of exposure to smoke. Yet, even younger adults in their 30s and 40s saw their death rates rise, indicating that the damage from smoking is not just a problem for the elderly.

Race and geography painted an even more complex picture of inequality. Black or African American individuals experienced the largest overall increase in death rates over the study period, a trend that is expected to continue. While White individuals also saw their death rates climb for most of the study, the data suggests their rates may begin to fall in the coming years. In contrast, the South region of the United States has become a hotspot for these deaths, maintaining high rates that are projected to remain the highest in the country by 2034. Perhaps most concerning is the divide between cities and the countryside. People living in rural areas and small towns, known as micropolitan or non-core areas, faced a heavier burden than those in large cities. These rural populations saw some of the steepest increases in death rates, and the data suggests they will continue to carry the heaviest load in the future.

Looking ahead, the researchers used mathematical models to forecast what might happen through 2035. These projections suggest that the overall number of deaths from tobacco-related heart disease may finally begin to decline across the entire country. The model predicts a drop from roughly 11.69 deaths per 100,000 people in 2024 to about 9.13 by 2035. However, this overall improvement masks a troubling reality: the benefits will not be shared equally. The models suggest that while the nation as a whole might see a slight improvement, specific groups will continue to suffer. Death rates are projected to keep rising for Black or African American individuals, for people aged 65 to 74, and for those living in rural areas. The South is expected to remain the region with the highest death rates, while rural communities will continue to face a mortality burden far heavier than their urban counterparts.

The study concludes that while the United States may be turning a corner on tobacco-related heart disease, the path forward is uneven. The recent slowdown in death rates offers a glimmer of hope, suggesting that better prevention and care are starting to work. Yet, the persistence of high and rising rates among older adults, Black communities, and rural populations indicates that current efforts are not reaching everyone. The data serves as a clear map of where the gaps remain, pointing to the urgent need for targeted interventions that address the specific needs of these high-risk groups. Without focused action to bring smoking cessation and heart care to those left behind, the promise of a healthier future will remain out of reach for many.