DM is now one of the most common noncommunicable diseases globally. It is an epidemic in many developing and industrializing countries. At present, the total number of diabetic persons globally is nearly 537 million with a prevalence of 10.5% in the adult population (20 to 79 years). China and India hold the first and second positions respectively having 140.9 and 74.2 million of total cases of diabetes. It is estimated that this current number of diabetic persons is projected to reach 643 million by 2030, and 783 million by 2045.2
In addition to diabetes, prediabetes also constitutes a major public health problem because of its association with an increased risk of DM and cardiovascular diseases (CVD). A total of 541 million (1 in 9) people are estimated to have impaired glucose tolerance (IGT) and 319 million (1 in 18) people have impaired fasting glucose (IFG).2