I thought you might be interested in this.Clinical Uses of Probiotics. Probiotics have been used predominantly in the prevention or treatment of diarrheal disease, with fewer studies in the areas of cancer prevention or the formation of carcinogens, hypocholesterolemic effects, and stimulation of the immune response.[12] They have been shown to reduce the duration and severity of viral diarrhea, specifically rotavirus in infants. They have also been shown to reduce the risk or incidence of the following: traveler's diarrhea relapsing Clostridium difficile diarrhea antibiotic-associated diarrhea diarrhea in daycare centers Unfortunately, the majority of studies have been poorly designed secondary to inadequately defined strains of microorganisms, variation in the preparation and storage of the probiotics, small sample size, and imprecise definitions of end points, making these trials nonreproducible from other investigators.