Hippocrates, the father of modern medicine, noted that silver had beneficial healing and anti-disease properties. Colloidal silver was used widely until around 1938 when the FDA came into being and the movement toward synthetic antibiotics began to emerge. Although used by NASA on shuttle missions and international airline carriers, silver has all but disappeared except for hospital intensive burn units. A group of scientists in Pharm World Sci v.19 pp. 197-201 Aug., 1997, refer to colloidal silver as "an antiseptic agent added because of its known anti fungal potency." It has also been reported that having silver in the bloodstream increases the healing process of fractured bones.