Diabetes directly kills about 1.6 million people worldwide each year, according to the World Health Organization’s most recent global estimate from 2021. But that number significantly undercounts the real toll. When you add deaths from kidney disease caused by diabetes and cardiovascular deaths driven by high blood sugar, the true figure climbs well above 2 million annually.
The Global Death Toll
The WHO reports that diabetes was the direct cause of 1.6 million deaths in 2021. On top of that, another 530,000 kidney disease deaths were caused by diabetes, and high blood glucose contributes to roughly 11% of all cardiovascular deaths worldwide. Nearly half of all diabetes-related deaths, 47%, occur before the age of 70, meaning many of these deaths happen during working years when people might otherwise have decades of life ahead of them.
These numbers are projected to keep rising. By 2030, annual diabetes deaths are expected to reach at least 1.63 million from direct causes alone, a 10% increase compared to 2019 levels. Some forecasting models put the figure closer to 1.9 million or higher. The International Diabetes Federation estimates that 537 million adults currently live with diabetes worldwide, and that number is projected to reach 783 million by 2045.
Diabetes Deaths in the United States
In the U.S., diabetes is the seventh leading cause of death. The most recent federal mortality data lists 94,445 deaths with diabetes as the underlying cause, at a rate of 27.8 deaths per 100,000 people. That places it behind heart disease, cancer, unintentional injuries, COVID-19, stroke, and chronic lower respiratory diseases.
But even that number is almost certainly too low. The CDC has found that diabetes appears on only about half of death certificates for people who actually die with the disease. Among those certificates where it does appear, it’s listed as the underlying cause only one-quarter of the time. In practice, someone with diabetes who dies of a heart attack or kidney failure may have their death attributed to those conditions rather than to the diabetes that caused them. The real number of U.S. deaths where diabetes played a meaningful role is likely two to three times the official count.
How Type 1 and Type 2 Compare
Both types of diabetes shorten life expectancy, but the pattern differs depending on when the disease develops. Type 2 diabetes diagnosed during adolescence is associated with roughly 12 years of lost life expectancy. Type 1 diabetes diagnosed between ages 21 and 30 results in about 10 years of life lost.
Among younger adults aged 20 to 39, annual death rates for both types are substantially higher than the general population’s. Women in that age range with either type of diabetes die at a rate of about 1.4 to 1.6 per 1,000 people per year, compared to 0.4 per 1,000 for women of the same age without diabetes. For men, the gap is similarly stark: 1.9 to 2.6 per 1,000 versus 0.8 per 1,000 in the general male population. In other words, young adults with diabetes face roughly two to four times the mortality risk of their peers.
Racial and Ethnic Disparities
Diabetes does not kill evenly across demographic groups. Among Americans aged 65 and older, the overall death rate from diabetes (as an underlying or contributing cause) was 553.4 per 100,000 in 2020. But the differences by race and ethnicity are dramatic.
American Indian and Alaska Native adults had the highest rate at 913.6 per 100,000, followed closely by Black adults at 884.1 and Native Hawaiian or Pacific Islander adults at 835.4. Hispanic adults faced a rate of 778.5 per 100,000. By comparison, white adults had a rate of 493.3 and Asian adults had the lowest rate at 457.7. That means Black and American Indian older adults die from diabetes at nearly twice the rate of white adults, a gap driven by differences in access to healthcare, rates of diagnosis, and management of the disease over time.
Why the Official Numbers Undercount
The way deaths are recorded creates a structural problem for understanding diabetes mortality. When someone with long-standing diabetes dies of heart failure, a stroke, or kidney disease, the death certificate typically names the immediate cause of death rather than the underlying metabolic condition that set it in motion. Diabetes damages blood vessels, nerves, kidneys, and the heart over years or decades. By the time it kills, it often does so through one of these secondary pathways.
This means the 1.6 million global figure and the 94,445 U.S. figure represent a floor, not a ceiling. The WHO’s inclusion of diabetes-attributable kidney and cardiovascular deaths pushes the global total well past 2 million. Some researchers estimate the full contribution could be higher still, particularly in low- and middle-income countries where diabetes often goes undiagnosed and untreated for years before it appears on any medical record at all.