Because of the widespread role of zinc in several bodily functions, the symptoms of zinc deficiency can arise in several organs — muscles, skin, and bones — and organ systems — immune, digestive, reproductive, and central nervous systems.[1] Diarrhea is a common symptom of zinc deficiency in infants, whereas poor growth and frequent infections are more common symptoms in children.[2][3][4][5] Zinc deficiency can also cause a loss of appetite and alter the sense of taste and smell.[6][4] However, these symptoms are not specific to zinc deficiency and can be caused by other conditions. Therefore, a person who suspects zinc deficiency should consult a doctor for further tests.
What are the signs and symptoms of zinc deficiency?
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•Last Updated: April 23, 2025
Zinc deficiency can lead to symptoms that affect various organs and systems, including diarrhea in infants, poor growth and frequent infections in children, loss of appetite, and altered taste and smell. However, these symptoms are not exclusive to zinc deficiency, so consulting a doctor for further tests is recommended.