In the present study, of 100 students, 60% are consume junk food daily, 20% are occasional eaters and 20% are non eaters. In daily junk food eaters, 22 (36.66 %) students have normal BMI and 38(63.34%) have high BMI. In occasional eaters 39(15 % ) students have low BMI and 17(85%) have normal BMI and in non eaters 5(25%) students have low BMI and 15 (75 % ) have normal BMI. Mean values of daily junk food eaters is 26.13( S.D. ±2.89), of occasional eaters is 23.03 (SD ±2.05) and of non eaters is 18.15 (SD ±1.14 ) each which has highly significant P value ( < .001) and F value = 75.22 statistically. In study of sexual dimorphism, normal BMI is found in 10 males and 14 females and high BMI in 18 males and 18 females which is statistically insignificant giving the important message that junk enhances obesity , irrespective of the sex. Raised BMI is the predictor of DM , CVS diseases, STN and stroke. Moreover, G.I.T. problems like reflux oesophagitis, Carcinoma colon and renal complications are more prevalent in junk food eaters. Increased BMI also leads to central obesity, lethargy and arthritis.This study helps to create awareness in parents and teachers of school going children and adults of Indian population in whom 60% are unaware about the side effects of the junk food.

Keywords: DM=Diabetes Mellitus; C.V.S.=Cardiovascular Disease; STN = Hypertension; Stroke; Nutritious.