Obesity is a preventable medical condition characterized by increased fats deposition in the body as a result of increased caloric intake or decreased physical activity. Having excess body weight was once perceived to be a phenomenon of the developed world. However, in recent years, it has extended to developing countries. In 2014, global disease estimates showed that Pakistan stands at number eight among the 10 countries hosting half of the 693 million obese individuals in the world.

A cross sectional study was conducted across different colleges of District Bajaur, i.e Government Post Graduate college Khar, Government Degree college Barkholozai, Government Degree college Nawagi, and Government Girls Degree college Khar. The BMI of all studied participants were calculated by using formula:

                               BMI = weight (kg)/height (m²)

According to calculated formula for BMI total of 274 persons were investigated, out of which, 2 (0.729%) were reported very severely under-weight, 7 (2.55%) were severely under-weight, 41 (14.96%) were under weight, 197 (71%) were normal BMI, 25 (9.1%) were over-weight, 1 (0.364%) were obese class –I, and 0 (0%) were obese class – II and 1 (0.364%) were obese class – III.

keywords- Body mass index, obesity, under-weight, over-weight