Table of contents
- Fast facts
- Global diabetes statistics
- U.S. diabetes statistics
- Age, sex, body weight, and education patterns
- Country snapshots
- What the numbers say about diagnosis and cost
Diabetes statistics show a large global burden that is still growing, but the biggest story is not just prevalence. The data also show how often diabetes goes undiagnosed, how sharply risk rises with age, and how costs scale into the trillions.
Fast facts
- 589 million adults aged 20-79 are living with diabetes worldwide, or 1 in 9 adults (IDF Diabetes Atlas 11th Edition 2025).
- The global adult total is projected to reach 853 million by 2050, equal to 1 in 8 adults (IDF Diabetes Atlas 11th Edition 2025).
- 4 in 5 adults with diabetes, or 81%, live in low- and middle-income countries (IDF Diabetes Atlas 11th Edition 2025).
- Diabetes caused 3.4 million deaths in 2024, equal to 1 death every 6 seconds (IDF Diabetes Atlas 11th Edition 2025).
- 252 million adults with diabetes were undiagnosed in 2024, or 43% of adults living with diabetes (IDF Diabetes Atlas 11th Edition 2025).
- Diabetes was responsible for USD 1.015 trillion in global health expenditure in 2024, a 338% increase over the past 17 years (IDF Diabetes Atlas 11th Edition 2025).
Big number: USD 1.015 trillion in annual global health expenditure is large enough to make diabetes one of the clearest examples of how disease burden becomes economic burden (IDF Diabetes Atlas 11th Edition 2025).
Global diabetes statistics
The global statistics show three overlapping pressures: more people living with diabetes, many of them undiagnosed, and rising spending to treat the disease.
Scale and growth
589 million adults aged 20-79 are already living with diabetes worldwide (IDF Diabetes Atlas 11th Edition 2025). That is not a niche health issue. It is a broad population-level condition that touches nearly every health system.
The projected increase to 853 million by 2050 means the global total is expected to keep climbing even after years of public health attention (IDF Diabetes Atlas 11th Edition 2025). In practical terms, the world moves from 1 in 9 adults today to 1 in 8 adults by 2050.
That shift matters because it implies more routine screening, more long-term management, more medication demand, and more pressure on primary care systems. It also means that the burden is not evenly shared: 81% of adults with diabetes live in low- and middle-income countries (IDF Diabetes Atlas 11th Edition 2025).
Diagnosis gap
The diagnosis gap is one of the clearest signals in the dataset.
- 252 million adults with diabetes were undiagnosed in 2024.
- That equals 43% of all adults living with diabetes (IDF Diabetes Atlas 11th Edition 2025).
- Almost 90% of undiagnosed adults with diabetes live in low- and middle-income countries (IDF Diabetes Atlas 11th Edition 2025).
That combination suggests a two-part problem: diabetes is widespread, and the people most likely to be missed are concentrated in the places with fewer resources for detection and follow-up.
Cost and complications
The financial side is just as striking. Diabetes accounted for USD 1.015 trillion in global health expenditure in 2024 (IDF Diabetes Atlas 11th Edition 2025). The same source says that figure is a 338% increase over the past 17 years, which shows how quickly the cost burden can compound when prevalence grows and treatment becomes more complex.
A useful way to read this figure is not as a single bill, but as a system-wide pressure signal. More people need chronic care, more people require screening, and more undiagnosed cases eventually surface with more expensive needs.
Live births and pregnancy-related risk
The dataset also points to risk outside the adult population. 1 in 5 live births are affected by hyperglycaemia in pregnancy (IDF Diabetes Atlas 11th Edition 2025). That figure adds another layer to the burden because it links diabetes to maternal and newborn health outcomes, not just adult chronic disease management.
U.S. diabetes statistics
The United States data add more detail about diagnosis, prevalence, mortality, and support infrastructure.
U.S. headline figures
CDC National Diabetes Profile estimates the U.S. national population at 333,287,557 and total diabetes cases at 31,337,970 (CDC National Diabetes Profile). It also estimates 2,031,000 new diabetes cases and 25,645,000 people with prediabetes (CDC National Diabetes Profile).
CDC also lists $361 billion in total direct medical cost attributable to diabetes (CDC National Diabetes Profile). That is a large concentrated cost burden even before you account for indirect costs, caregiving time, or reduced productivity.
Prevention and service infrastructure
The profile shows a substantial prevention and care network:
- 37 states have diabetes action plans (CDC National Diabetes Profile).
- 1,502 CDC-recognized organizations offer the National DPP lifestyle change program (CDC National Diabetes Profile).
- 286 Medicare Diabetes Prevention Program suppliers are listed (CDC National Diabetes Profile).
- 745,102 participants are enrolled in a National DPP lifestyle change program (CDC National Diabetes Profile).
- 29 states have some level of Medicaid coverage for the National DPP lifestyle change program (CDC National Diabetes Profile).
- 2,090 recognized or accredited DSMES service providers are listed (CDC National Diabetes Profile).
- 980,255 people with diabetes had at least one encounter at a recognized or accredited DSMES service (CDC National Diabetes Profile).
Those numbers matter because they show the size of the support system relative to the burden. The network is large, but the disease burden is much larger.
U.S. prevalence and mortality
CDC FastStats reports that among U.S. adults age 20 and older:
- 15.8% have total diabetes prevalence (CDC FastStats).
- 11.3% have physician-diagnosed diabetes (CDC FastStats).
- 4.5% have undiagnosed diabetes (CDC FastStats).
CDC also records 94,445 diabetes deaths in the U.S. and a mortality rate of 27.8 deaths per 100,000 population (CDC FastStats). Diabetes ranks as the 7th leading cause of death in the U.S. (CDC FastStats).
Key point: the U.S. dataset shows a split between diagnosed and undiagnosed diabetes, which means prevalence alone does not describe the full care burden (CDC FastStats).
Age, sex, body weight, and education patterns
The CDC NCHS Data Brief No. 516 data make one thing obvious: diabetes prevalence rises sharply with age and is strongly patterned by body weight and education.
Comparison table
| Group | Total diabetes prevalence | Diagnosed diabetes prevalence | Undiagnosed diabetes prevalence |
|---|---|---|---|
| Men age 20 and older | 18.0% (CDC NCHS Data Brief No. 516) | 12.9% (CDC NCHS Data Brief No. 516) | Not stated |
| Women age 20 and older | 13.7% (CDC NCHS Data Brief No. 516) | 9.7% (CDC NCHS Data Brief No. 516) | Not stated |
| Adults age 20-39 | 3.6% (CDC NCHS Data Brief No. 516) | 2.2% (CDC NCHS Data Brief No. 516) | 1.3% (CDC NCHS Data Brief No. 516) |
| Adults age 40-59 | 17.7% (CDC NCHS Data Brief No. 516) | 12.1% (CDC NCHS Data Brief No. 516) | 5.6% (CDC NCHS Data Brief No. 516) |
| Adults age 60 and older | 27.3% (CDC NCHS Data Brief No. 516) | 20.5% (CDC NCHS Data Brief No. 516) | 6.8% (CDC NCHS Data Brief No. 516) |
| Adults with obesity | 24.2% (CDC NCHS Data Brief No. 516) | 16.3% (CDC NCHS Data Brief No. 516) | 7.9% (CDC NCHS Data Brief No. 516) |
| Adults with overweight | 9.5% (CDC NCHS Data Brief No. 516) | 6.8% (CDC NCHS Data Brief No. 516) | 2.8% (CDC NCHS Data Brief No. 516) |
| High school degree, GED, or less | 19.6% (CDC NCHS Data Brief No. 516) | 14.6% (CDC NCHS Data Brief No. 516) | Not stated |
| Some college | 17.3% (CDC NCHS Data Brief No. 516) | 12.0% (CDC NCHS Data Brief No. 516) | Not stated |
| Bachelor’s degree or more | 11.0% (CDC NCHS Data Brief No. 516) | 3.4% (CDC NCHS Data Brief No. 516) | Not stated |
What the age pattern says
The age gradient is steep. Adults age 20-39 have 3.6% total diabetes prevalence, while adults age 60 and older have 27.3% (CDC NCHS Data Brief No. 516). That is a major difference across life stage, not a minor drift.
The diagnosed figures tell the same story:
- 2.2% among adults age 20-39.
- 12.1% among adults age 40-59.
- 20.5% among adults age 60 and older (CDC NCHS Data Brief No. 516).
The undiagnosed share also changes by age. Adults age 20-39 have 1.3% undiagnosed diabetes prevalence, compared with 5.6% for ages 40-59 and 6.8% for ages 60 and older (CDC NCHS Data Brief No. 516).
What the sex pattern says
Men age 20 and older have 18.0% total diabetes prevalence and 12.9% diagnosed diabetes prevalence (CDC NCHS Data Brief No. 516). Women age 20 and older have 13.7% total diabetes prevalence and 9.7% diagnosed diabetes prevalence (CDC NCHS Data Brief No. 516).
That gap shows up in both total and diagnosed prevalence. It is useful for readers because it shows that diabetes statistics are not evenly distributed across adults, even before any other risk factor is considered.
What body weight and education patterns say
The obesity and overweight figures show a clear gradient:
- Adults with obesity: 24.2% total diabetes prevalence (CDC NCHS Data Brief No. 516).
- Adults with overweight: 9.5% total diabetes prevalence (CDC NCHS Data Brief No. 516).
Diagnosis follows the same direction, with 16.3% diagnosed diabetes prevalence among adults with obesity and 6.8% among adults with overweight (CDC NCHS Data Brief No. 516).
Education is also strongly associated with prevalence:
- High school degree, GED, or less: 19.6% total diabetes prevalence (CDC NCHS Data Brief No. 516).
- Some college: 17.3% (CDC NCHS Data Brief No. 516).
- Bachelor’s degree or more: 11.0% (CDC NCHS Data Brief No. 516).
The diagnosed figures show an even larger gap at the top end, where adults with a bachelor’s degree or more have 3.4% diagnosed diabetes prevalence (CDC NCHS Data Brief No. 516).
Country snapshots
The country-level figures in the dataset show that diabetes is a global issue with very different local magnitudes.
Selected country comparison
| Country | Adult diabetes population | Age-standardized prevalence | Diabetes-related deaths | Type 1 diabetes | Undiagnosed diabetes |
|---|---|---|---|---|---|
| Afghanistan | 1,932.8 thousand (IDF Diabetes Atlas 11th Edition 2025) | 11.7% (IDF Diabetes Atlas 11th Edition 2025) | 11,642 (IDF Diabetes Atlas 11th Edition 2025) | 13,600 (IDF Diabetes Atlas 11th Edition 2025) | 71.4% (IDF Diabetes Atlas 11th Edition 2025) |
| Albania | 261.4 thousand (IDF Diabetes Atlas 11th Edition 2025) | 10.6% (IDF Diabetes Atlas 11th Edition 2025) | 1,120 (IDF Diabetes Atlas 11th Edition 2025) | 3,497 (IDF Diabetes Atlas 11th Edition 2025) | 33.5% (IDF Diabetes Atlas 11th Edition 2025) |
| Algeria | 4,761.8 thousand (IDF Diabetes Atlas 11th Edition 2025) | 17.5% (IDF Diabetes Atlas 11th Edition 2025) | 20,642 (IDF Diabetes Atlas 11th Edition 2025) | 188,195 (IDF Diabetes Atlas 11th Edition 2025) | 31.7% (IDF Diabetes Atlas 11th Edition 2025) |
| Argentina | 4,342.1 thousand (IDF Diabetes Atlas 11th Edition 2025) | 14.0% (IDF Diabetes Atlas 11th Edition 2025) | 26,164 (IDF Diabetes Atlas 11th Edition 2025) | 86,977 (IDF Diabetes Atlas 11th Edition 2025) | 29.1% (IDF Diabetes Atlas 11th Edition 2025) |
| Australia | 1,693.7 thousand (IDF Diabetes Atlas 11th Edition 2025) | 7.4% (IDF Diabetes Atlas 11th Edition 2025) | 8,295 (IDF Diabetes Atlas 11th Edition 2025) | 114,545 (IDF Diabetes Atlas 11th Edition 2025) | 28.0% (IDF Diabetes Atlas 11th Edition 2025) |
| Bangladesh | 13,877.4 thousand (IDF Diabetes Atlas 11th Edition 2025) | 13.2% (IDF Diabetes Atlas 11th Edition 2025) | 31,620 (IDF Diabetes Atlas 11th Edition 2025) | 25,520 (IDF Diabetes Atlas 11th Edition 2025) | 39.1% (IDF Diabetes Atlas 11th Edition 2025) |
| Brazil | 16,621.4 thousand (IDF Diabetes Atlas 11th Edition 2025) | 10.6% (IDF Diabetes Atlas 11th Edition 2025) | 111,393 (IDF Diabetes Atlas 11th Edition 2025) | 499,402 (IDF Diabetes Atlas 11th Edition 2025) | 31.9% (IDF Diabetes Atlas 11th Edition 2025) |
What stands out across countries
The country list is not a ranking, but it still shows clear contrasts.
- Brazil has the largest adult diabetes population in this subset at 16,621.4 thousand (IDF Diabetes Atlas 11th Edition 2025).
- Bangladesh follows with 13,877.4 thousand adults with diabetes and a relatively high 39.1% undiagnosed share (IDF Diabetes Atlas 11th Edition 2025).
- Afghanistan stands out for its 71.4% undiagnosed diabetes figure, which is the highest undiagnosed share in the listed countries (IDF Diabetes Atlas 11th Edition 2025).
- Australia has the lowest age-standardized prevalence in this subset at 7.4% (IDF Diabetes Atlas 11th Edition 2025).
- Algeria has an age-standardized prevalence of 17.5%, the highest in this sample (IDF Diabetes Atlas 11th Edition 2025).
The death figures show another layer of variation. Brazil has 111,393 diabetes-related deaths, far above the other listed countries in absolute terms (IDF Diabetes Atlas 11th Edition 2025). That is partly a reflection of population size, but it also reinforces how national totals can look very different from age-standardized prevalence.
What the numbers say about diagnosis and cost
If you step back from the individual figures, three themes dominate the dataset.
1. Diabetes is already common, and it is still rising
The global total of 589 million adults today and 853 million by 2050 points to a sustained upward trend (IDF Diabetes Atlas 11th Edition 2025). The U.S. prevalence figures show the same disease in a high-resource setting, where 15.8% of adults age 20 and older have diabetes and another 4.5% are undiagnosed (CDC FastStats).
2. Undiagnosed diabetes remains a major share of the problem
The global estimate of 252 million undiagnosed adults and the U.S. diagnosis split both point to the same operational challenge: knowing who has diabetes is not automatic (IDF Diabetes Atlas 11th Edition 2025; CDC FastStats).
That matters because diagnosis is the gateway to ongoing care. The dataset repeatedly shows that a large portion of the burden sits outside formal management.
3. Cost follows prevalence, diagnosis gaps, and chronic care needs
The global USD 1.015 trillion health expenditure figure and the U.S. $361 billion direct medical cost estimate show that diabetes is expensive at both global and national levels (IDF Diabetes Atlas 11th Edition 2025; CDC National Diabetes Profile).
Those cost figures are not isolated accounting numbers. They reflect the long-duration nature of the condition, the need for monitoring, and the consequences of delayed detection.
Short takeaway list
- Diabetes is already a large global disease burden.
- The world is heading toward even more adults living with diabetes.
- Diagnosis gaps remain substantial.
- Risk rises sharply with age and is also associated with obesity and lower educational attainment in the U.S. data.
- National systems need both prevention coverage and routine management capacity.
The useful part of diabetes statistics is not just the headline prevalence. It is the way prevalence, undiagnosed cases, age patterns, and cost data line up into the same story: diabetes is widespread, often hidden, and expensive to manage once it is established.