GSTM1 and anemia (phenotype): Based on the micronutrient survey, the national prevalence of anaemia was 14.9% (14.4% moderate (Hb 8–12 g/dL, 0.5% severe (Hb<8g/dL) in adolescents aged 12–14 years and 11.8% (10.5% moderate and 1.3% severe) in the age group 15–19 years [69].