Can iron deficiency anemia cause a cold?

Aug 24, 2022 Source: Cainiu Health
Disease description:

I suddenly caught a cold. I previously had anemia—can iron deficiency anemia cause colds?

Doctor's answer (1)
Dr. Cheng Yicheng
People with anemia are prone to catching colds, usually upper respiratory tract infections, primarily caused by viral infections. Due to insufficient oxygen delivery from reduced blood cell counts, individuals with anemia have lower resistance compared to healthy individuals. In the same external environment, those with anemia are more likely to develop colds as a result of weakened immunity caused by anemia, which in turn leads to colds. Therefore, upper respiratory tract infections resulting from colds are very common and require appropriate treatment.