Diabetes is a growing global health care problem and it causes a severe economic burden to the patients and to society at large. The International Diabetes Federation (IDF) and the World Health Organization (WHO) have estimated that globally there are 463 million with diabetes in 2019 and by 2030 it is predicted to increase to 578 million. People with type 2 diabetes are increasing in every country, but 80% of diabetes live in low and middle-income countries.

It is estimated that nearly 50% of diabetes is undiagnosed. India has 77.0 million diabetes and it is expected to rise to 101.0 million by 2030. In India, Tamil Nadu is one of the states with the largest number of people, approximately 35.2 lakh with diabetes. This may be attributed to the higher rates of urbanization and modernization.

Series of urban and rural epidemiological studies conducted by IDRF has resulted in a wealth of knowledge on various aspects, the pathogenesis, risk factors, and temporal changes in the prevalence of diabetes, pre-diabetes, and cardiovascular risk factors in India.

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