GSTM1 and anemia (phenotype): Assessment for anemia observed that the mean levels of Hb and ferritin among male (12.2 (SD: ±0.9) g/dL and 39.4 (SD: ±8.5) ng/mL) as compared to female adolescents (10.2 (SD: ±0.8) g/dL and 30.9 (SD: ±7.8) ng/mL) were significantly high (P = 0.00).