According to the World Health Organization anemia is defined as a hemoglobin (Hb) level of less than 12.0 g/dl in women and 13.0 g/dl in men.1 Iron deficiency anemia (IDA) has been cited as the most common cause of anemia globally.2 Endoscopies are an effective way for evaluating anemia in the hospital setting. The gene discussed is GSTM1; the disease is anemia.