A recent study published in Diabetes Care estimated the prevalence of undiagnosed diabetes among adults across 215 countries and territories using 193 data sources from 109 countries collected between 2003 and 2024. The analysis found that 42.8% of people living with diabetes, equivalent to 251.7 million adults, were undiagnosed in 2024. Low-income countries had a higher proportion of undiagnosed diabetes (58.7%) compared with high-income countries (28.9%).
Middle-income countries carried the largest burden of undiagnosed cases (206 million), with China, India, and Indonesia alone representing 127.1 million affected individuals. At the national and regional levels, the proportion of undiagnosed diabetes ranged from 16.2% in Colombia to 90.4% in Burkina Faso, with regional estimates spanning from 29.1% in North America to 72.6% in Africa. Notably, fewer than 5% of countries achieved…
