Define GGT. GGT synonyms, GGT pronunciation, GGT translation, English dictionary definition of GGT. n. Any of a class of enzymes that catalyze the transfer of a chemical group, such as a phosphate or amine, from one molecule to another. American Heritage
Virtually all adult men and postmenopausal women are at risk for iron overload due to inefficient iron excretion, since they do not lose blood on a regular basis. Blood loss is the primary way to lower excess iron, as the body has no active excretion mechanisms. Another common cause of exc...