IGT is more prevalent than IFG in many populations.
In 2003, the IDF estimated that 314 million adults worldwide (8.2%) had IGT, a form of prediabetes characterised by postprandial hyperglycaemia.
The prevalence of prediabetes is increasing around the world.
Approximately 472 million adults worldwide will have prediabetes by 2025.
Up to 50% of individuals with IGT will develop type 2 diabetes over 10 years.
Managing diabetes accounts for 5–10% of a nation's health budget, and the treatment of diabetes complications accounts for most of these costs.