The type 2 diabetes mellitus in India are a result of societal influences and changing of life style. Diabetic patients have been known in the India as a disease of affluent class. The purpose of this study was to determine the relationship between BMI and type 2 diabetes mellitus. Data on body mass index is calculated by using the formula Weight (Kg)/Height (mt2 ) and using the HBA1C test for determining the type 2 Diabetic patients were collected from 160 subjects having abnormal BMI, age between 35-60years. The subjects were examined in the Rama Medical College Hospital and Research Centre, Kanpur. BMI and sugar level showed a corresponding increase for both male and female subjects although values were proportionately higher for the female subjects