Probiotics are bacteria that help maintain the natural balance of organisms (microflora) in the intestines. An estimated 100 trillion microorganisms representing more than 500 different species inhabit every normal, healthy bowel. These microorganisms generally don’t make us sick; most are helpful. Gut-dwelling bacteria keep pathogens in check, aid digestion and nutrient absorption, and contribute to immune function. Probiotic therapies suggest that certain probiotics may help maintain remission of ulcerative colitis and prevent relapse of Crohn’s disease and the recurrence of pouchitis (a complication of surgery to treat ulcerative colitis). The largest group of probiotic bacteria in the intestine is lactic acid bacteria, of which Lactobacillus acidophilus, found in yogurt with live cultures, is the best known. Yeast is also a probiotic substance. But only certain types of bacteria or yeast (called strains) have been shown to work in the digestive tract. Probiotics are also available as dietary supplements.
Lactobacillus and Bifidobacteria
Lactobacillus and Bifidobacteria is a type of bacteria. These are "friendly" bacteria that normally live in our digestive, urinary, and genital systems without causing disease. Lactobacillus is also found in some fermented foods like yogurt and in dietary supplements. Lactobacillus is also used for infection with Helicobacter pylori, the type of bacteria that causes ulcers. It is also used for high cholesterol, lactose intolerance, Lyme disease, hives, and to boost the immune system.
What are probiotics used for?
Many people use probiotics to prevent diarrhea, gas, and cramping caused by antibiotics. Antibiotics kill "good" (beneficial) bacteria along with the bacteria that cause illness. A decrease in beneficial bacteria may lead to digestive problems. Taking probiotics may help replace the lost beneficial bacteria. This can help prevent diarrhea.
A decrease in beneficial bacteria may also