Cancer Mortality Rates Show Striking Geographic and Economic Divides Across America

While cancer death rates have been declining across the United States over the past few decades, a new study reveals significant disparities in how these improvements are distributed across different regions and demographic groups.

Research published in the British Journal of Cancer has found that urban, coastal, and higher-income counties have experienced substantially greater reductions in cancer mortality compared to rural and lower-income areas, with the gap widening over time.

The comprehensive analysis, conducted by researchers at Mississippi State University’s Social Science Research Center in collaboration with Oak Ridge National Laboratory, examined more than 21.3 million cancer deaths recorded on death certificates between 1981 and 2019 across nearly 3,000 U.S. counties. The data was sourced from the CDC’s WONDER (Wide-Ranging Online Data for Epidemiologic Research) database.

Overall, U.S. cancer mortality has declined by approximately 32% between 1991 and 2019. However, this improvement has been far from uniform across the country, according to lead author Arthur G. Cosby, Giles Distinguished Professor Emeritus at Mississippi State.

“In a complex nation such as the U.S., we should not be too surprised that there are large differences in health outcomes shaped by the diversity and variety of local regions and groups,” Cosby explained. “Cancer improvement over the last few decades certainly aligns with this perspective.”

The study found that large urban centers along both the Atlantic and Pacific coasts consistently demonstrated the highest rates of cancer mortality improvement. By contrast, rural areas and smaller cities in America’s interior showed significantly lower rates of decline.

Perhaps most concerning is the growing economic divide in cancer outcomes. By 2019, the wealthiest counties (top 10% by income) showed approximately seven times greater mortality improvement than the poorest counties. This stark disparity points to fundamental inequalities in healthcare access, prevention strategies, and treatment options.

Several factors appear to contribute to these regional differences. The researchers highlighted the decline in tobacco use as a key driver of improved cancer outcomes, particularly in areas with aggressive anti-smoking campaigns.

“Wealthy, metropolitan New York City has been aggressive in instituting tobacco control measures, and the results show,” Cosby noted. “Manhattan had a lung cancer rate of 49 per 100,000 in 1991. By 2019, it cut its rate to 19.6 — a 60% reduction.”

Dr. Marc Siegel, Fox News senior medical analyst who was not involved in the study, suggested that more aggressive preventive measures targeting smoking and alcohol use likely played a role in the sharper mortality decline in urban, affluent areas. Additionally, he pointed to “more aggressive screening campaigns, including at major medical centers” that can diagnose pre-cancers or cancers at earlier, more treatable stages.

Other factors potentially contributing to these disparities include lifestyle habits, environmental exposures, and access to specialized cancer care. Urban centers typically host major academic medical centers and cancer institutes that often pioneer new treatments and clinical trials, providing local residents with earlier access to cutting-edge therapies.

The researchers acknowledged certain limitations in their study. Because the analysis was conducted at the county level, the findings may not necessarily apply to individuals. Additionally, death certificate data comes with inherent limitations, including potential inaccuracies in cause of death reporting and changes in medical classifications over time.

“There are many limitations associated with the use of death certificates in research, such as accuracy of cause of death, possible multiple causes and changes in medical explanation for death over time,” Cosby explained.

The findings highlight a troubling paradox in American healthcare: while overall cancer outcomes continue to improve nationwide, these advances are not being distributed equitably, potentially exacerbating existing health disparities.

“The varying speed of adoption of life-saving interventions between geographic places may produce increasing disparities,” Cosby warned. “It is possible to have a situation where nearly all places are improving their cancer mortality, but at much different rates.”

The researchers are now calling for more nuanced studies that account for these regional variations and targeted public health interventions to address the growing cancer mortality gap across America’s geographic and economic divides.