i am able to learn the importance in iron in red blood cells and leanr how free iron may cause organ damage

i learned tha sickle cell anemia is a blood disease that is characterized by defective hemoglobin. this happens because a defect in gentics. it only affects those who live or that have decended from equtorial countries. anyone that has this can not get malaria. Malaria is transferred through mosquitos that live in equatorial places.