For much of human history, infectious diseases, maternal and neonatal conditions, and nutritional deficiencies defined the leading edge of mortality. Plagues, diarrheal disease, and tuberculosis were the archetypal killers. By contrast, noncommunicable diseases (NCDs)—heart disease, cancer, diabetes, chronic lung disease—were rare, because most people did not live long enough to develop them.
That picture has changed profoundly.
📉 Progress in NCD Mortality — But Slowing
A new global analysis published in The Lancet examined the probability of dying from an NCD between birth and age 80 in 185 countries. Between 2010 and 2019, NCD mortality declined in most nations:
152 countries for women (82%) 147 countries for men (79%)
Yet the rate of decline has slowed compared with the previous decade. In some settings, progress has stalled or reversed, especially in high-income countries such as the United States.
🌍 Global vs. Regional Transitions
At the global level, NCDs were already the leading cause of death by 1990, accounting for more than half of all deaths. Their share has since grown to nearly three-quarters.
But the oft-cited “late 2000s tipping point” applies more specifically to low- and middle-income countries (LMICs). In these regions, communicable, maternal, neonatal, and nutritional conditions (CMNNs) dominated until around 2008–2010, when NCDs overtook them. This transition reflects improvements in infectious disease control coupled with rising longevity, urbanization, and lifestyle risk factors.
🇺🇸 The U.S. Example
In the United States, the probability of an adult woman aged 30–70 dying from an NCD dropped from 13% in 2001 to 10% in 2010. But from 2010 to 2019, the decline was just one additional percentage point. Men showed similar trends.
More concerning, NCD deaths in younger adults (20–45 years) have begun to increase—an unusual pattern compared with other high-income peers.
🔑 Takeaway
The epidemiological transition is complete: the world is firmly in an era dominated by noncommunicable diseases. The challenge now is not whether NCDs are the leading cause of death, but whether our progress against them can be accelerated.
The Lancet study is a reminder that global gains have slowed just as demographic, behavioral, and social pressures are mounting. Sustained investment in prevention, early detection, and equitable health systems will determine whether the next decade brings renewed acceleration—or further stagnation.
Citation
NCD Countdown 2030 Collaborators. “Benchmarking progress in non-communicable diseases.” The Lancet. Published September 2025.
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