Why does impaired oxygen delivery to tissues occur in iron deficiency anemia despite adequate lung function?

💡 Explanation

Iron is a crucial component of heme, which binds oxygen in hemoglobin; therefore, iron deficiency reduces hemoglobin synthesis, hindering oxygen binding, leading to impaired delivery, because the oxygen-carrying capacity is diminished. This occurs, rather than alveolar exchange being affected, because lung function remains normal.

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