Zinc Zinc is a component of certain important enzymes, such as carbonic anhydrase, lactic dehydrogenase, alkaline phosphatase, DNA and RNA polymerases, and d-aminolevulinic acid dehydratase. Zinc is obtained primarily through food. About 30% of that ingested is absorbed in the small intestine. About 80% of zinc in blood is found in RBCs, mostly as part […]