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Sulfur belongs to the chalcogen family. Other members of the family are oxygen, selenium, tellurium, and polonium. These elements make up Group 16 (VIA) of the periodic table. The periodic table is a chart that shows how chemical elements are related to each other.
Sulfur is a major mineral that is part of the proteins of your body. More specifically, sulfur is part of methionine and cysteine, which are amino acids needed in the making of proteins. We see that a sulfur deficiency can lead to a cascade of problems.