This document discusses zinc and selenium. It begins by outlining intended learning outcomes related to listing dietary sources and RDA, functions, deficiency manifestations, and therapeutic uses of zinc and selenium. It then provides details on the distribution, sources, and RDA of zinc and selenium. The functions of zinc include catalytic, structural, and regulatory roles, while selenium functions as an antioxidant and is part of antioxidant enzymes. Deficiency of zinc can cause skin and hair problems, while selenium deficiency is associated with cardiomyopathy. Zinc treatment can help in Wilson's disease by reducing copper absorption.