Further study is needed to disentangle this interaction and the underlying mechanisms. moreover, the balance of evidence maintains that outdoor air pollution has a mod- est effect on the occurrence of anemia in schoolchildren. Exposure to air pollution may increase the risk of anemia in children through several mechanisms The biological mechanisms by which air pollutants may interfere with the process of red blood cell production are reflected in the synthesis of hem, the forming of red blood cells, and its life-expectancy. Toxic materials from the air lead to significant damage of red blood cells such as reduced he- moglobin concentrations, the.