Very less studies were carried out among adolescent males, and the present study observed high prevalence of low Hb (male: 87.2% and females: 96.7%) in both genders, which was found to be similar as reported to be 90.0% among adolescent girls [4], whereas country wide survey did report that 55.8% of female and 30.2% of male adolescents but of 15–19 years had anemia [3], which was observed to be low as compared to present and earlier study [4]. Here, GSTM1 is linked to anemia (phenotype).