A women suffered iron deficiency anemia (Hb < 120 g/L and ≥2 altered biochemical parameters: MCV < 80 fL and/or Zpp > 70 ug/dL RBC and/or %Sat > 15 and/or FS ≤ 12 μg/dL) and other 8 women had iron deficiency without anemia (Hb = normal and ≥ 2 altered biochemical parameters). This evidence concerns the gene GSTM1 and anemia.