WELL, GOOD: Research: Saliva protects body from traveler’s diarrhea. “A protein found in saliva helps protects the body from traveler’s diarrhea, which may lead to the development of new preventive therapies for the disorder and others, according to a study. Researchers at Boston University School of Medicine and collaborators found the protein histatin-5 in human saliva helps the body defend itself from gut infections, according to findings published Thursday in the Journal of Infectious Diseases.”