873TO STUDY BODY MASS INDEX ON LUNG FUNCTION IN HEALTHY ADULTSObesity is becoming one of the serious public health problems of modern world with rapidly changing lifestyles involving consumption of high calorie foods with decreased physical activities. Spirometery is the initial screening tool for pulmonary diseases. The aim of this study was to evaluate the prevalence of deranged BMI, pulmonary function tests and correlation between BMI and pulmonary function test. Our aim is to find association and correlation between BMI and pulmonary functions parameters. Increasing BMI is associated with decrease in lung functions in healthy population of either gender. Regular pulmonary function monitoring may assess adverse effects of obesity on pulmonary functions. Hence, proper and timely advice regarding lifestyle modification to obese subjects will prevent unwanted complications of obesity.drvrvkk@gmail.comResearch942018Body Mass Index (BMI), Pulmonary Function Test (PFT),Forced Vital Capacity (FVC), SpirometerySheeba Varghese,Tumma G.Kiran BabuAssistant Professor, Department of Physiology, Sri Lakshmi Narayana Institute of Medical sciences, Pondicherry, (Affiliated to Bharath University, Chennai), India,Associate Professor, Department of General Medicine, Sri Lakshmi Narayana Institute of Medical sciences, Pondicherry, (Affiliated to Bharath University, Chennai), India