Back ground: Obesity is increasing worldwide and WHO has declared obesity as a disease. South Asians are genetically pre disposed to higher body fat deposition and hence more prone to develop NCDs. WHO has put forth additional cut offs of BMI for South Asians as public action points for the prevention of NCDs. The present study aimed at analyzing the diabetes risk using IDRS across BMI categories. Methods: This study was conducted through a case-control survey method. Based on WHO cut offs, 8 BMI groups were considered as cases and had 27 participants in each group. For the controls, 15 respondents having normal BMI without NCD s were considered. One more control group was 25 respondents with normal BMI but having NCDs. The data was collected through a structured questionnaire and the data were analyzed based on IDRS. Results: The control group had the lowest risk for developing diabetes and the risk increased for the controls with comorbidity group and the overweight and obese groups. For both genders, the risk was peaking at BMI of 30.0-32.49 Kg/m2, followed by 25.0-27.49Kg/m2, and 32.5-34.99 Kg/m2. On average, female participants faced 5% higher risk than males for developing diabetes but the difference was not statistically significant. The correlation of BMI and Visceral fat were statistically significant and body fat percentage had a highly significant influence on diabetes risk. Conclusion: Additional cut off points proposed by WHO should be considered as important public action points for the prevention of NCDs.