In the antenatal anxiety symptoms assessment, the SCL score measured in the late pregnancy of pregnancy was higher in the group with Hb < 10.0 g/dL than those with Hb ≥ 10.0 g/dL (5.5 (0–14.0) vs. 2.0 (0–28.0), p = 0.028), but the SCL scores in the early and mid-pregnancy as well as during the postpartum period did not differ between the groups. This evidence concerns the gene GSTM1 and Anxiety.