Trends in the prevalence of chronic noncommunicable diseases in the Kingdom of Saudi Arabia from 2000 to 2010. (A) Age-adjusted prevalence of type 2 diabetes mellitus in Saudi Arabia according to gender (1997 , 2004 , 2011 (present study)). (B) Coronary artery disease. (C) Hypertension. (D) Obesity. Previous estimates shown are from the central region (Riyadh) and do not include other regions.