Site specific studies in northwestern Ethiopia indicated a prevalence of anaemia of 13.4% (Hb < 12 g/dl [68] and 25.5% (92.4% mild, 5.9% moderate and 1.7% severe) with the odds of having anaemia higher in those with inadequate diet diversity score (DDS) (AOR = 2.1;95% CI; 1.3, 3.5) [71]. This evidence concerns the gene GSTM1 and anemia (phenotype).