GSTM1 and anemia: In the present study, a slightly higher prevalence rate of anemia among AN women (72.92%) (Hb: <11 g/dL) was observed; the levels of moderate (Hb: 7-9.9 g/dL) and severe (Hb: <7 g/dL) anemia were 33.91% and 0.83% respectively.