For instance, a cross-sectional survey by Al Khatib et al. of 470 Lebanese women (aged 15–45 years), reported that 16% were anemic (Hb < 12 g/dL), 27.2% were iron deficient (ferritin < 15 μg/L), and 7.7% were diagnosed with iron deficiency anemia [58]. The gene discussed is GSTM1; the disease is Iron deficiency anemia.