GSTM1 and Iron deficiency anemia: As shown in Table 3, among 65 iron deficiency anaemia patients, 34 patients were in the pre-diabetic range (5.7-6.4) whose mean Hb was 4.8 gm/dl, seven patients were in the diabetic range (>6.4) with mean Hb was 3.1 gm/dl and 24 patients were in the normal range with mean Hb of 5.6 gm/dl (≤5.6).