Iron metabolism refers to the processes by which the body absorbs, utilizes, and stores iron, an essential mineral for various biological functions. Iron is primarily absorbed in the small intestine and is crucial for the production of hemoglobin, which carries oxygen in the blood. The body regulates iron levels through absorption and storage mechanisms to prevent deficiency or overload. Once absorbed, iron is transported in the bloodstream bound to a protein called transferrin. It can be stored in the liver, spleen, and bone marrow as ferritin or hemosiderin. The body recycles iron from old red blood cells, ensuring a balance between iron intake and demand for processes like red blood cell production.