May 30 (UPI) -- Scientists at the University of Concepción in Chile have developed the world's first patented probiotic designed to prevent gastric cancer. The oral supplement is 93.6% effective and targets Helicobacter pylori, a key bacterial factor in the disease. The probiotic forms a protective coating along the stomach lining, preventing the bacteria from attaching when contaminated food or water is consumed. The supplement is approved for use starting at age 8 and also functions as an