## Global Diabetes Prevalence (IDF 2021) **Key Point:** The IDF Diabetes Atlas (10th edition, 2021) reported that approximately **10.7% of the global adult population (537 million people) aged 20–79 years** have diabetes mellitus. **High-Yield:** This figure includes both diagnosed and undiagnosed diabetes. The prevalence has been rising steadily due to: - Aging populations - Increasing obesity rates - Urbanization and lifestyle changes - Improved detection and screening **Clinical Pearl:** India ranks **second globally** in absolute number of people with diabetes (approximately 74 million), after China. The prevalence in India is estimated at 8–10% in urban areas and 2–3% in rural areas. ## Key Epidemiological Trends | Metric | Value | | --- | --- | | Global prevalence (20–79 years) | 10.7% | | Estimated number of people with diabetes | 537 million | | Type 2 diabetes proportion | ~90% of all diabetes | | Undiagnosed diabetes | ~40% of all cases | | Projected prevalence by 2030 | 12.2% | **Mnemonic:** **IDF 10.7** — Remember: **I**nternational **D**iabetes **F**ederation reports approximately **10.7%** global prevalence in adults.
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