Diabetes has become a major health threat to the whole world; indeed, the greatest increase will be contributed by India, which has already been declared by the World Health Organization (WHO) as the country with the largest number of diabetics in the world. Diabetes is frequently not diagnosed until complications appear, and approximately one third of all people with diabetes may be undiagnosed, though diagnosed many people are not aware of their condition.

Late detection of diabetes often means that at the time of diagnosis complications have already damaging the eyes, kidneys and nerves. These complications are costly in the physical, financial and psychosocial sense. Early detection and treatment of diabetes may not only improve glycemic control, but also improves blood pressure and lipids. Who should be screened? In general all adults should be screened at regular intervals