Sulfur

About Sulfur

Sulfur is among the most abundant minerals in the human body and is supplied in the diet mainly through the sulfur containing amino acids methionine and cysteine rather than as a separate nutrient, so needs are generally considered to be met by adequate protein intake. Sulfur atoms in cysteine form disulfide bridges that stabilize the folded shape of many proteins, including the keratin of hair and nails and the hormone insulin. Sulfur is also part of the antioxidant glutathione, the amino sulfonic acid taurine, the vitamins thiamine and biotin, coenzyme A, and sulfated molecules such as chondroitin sulfate in cartilage. Plant foods in the onion and cabbage families contain organosulfur compounds responsible for their pungent flavors. Sulfites, sulfur based preservatives used in wine and dried fruit, can provoke reactions in sensitive people, especially some people with asthma. Methylsulfonylmethane, sold as MSM, is marketed for joint health, but evidence remains limited.