Probiotics and Prebiotics Directory
Probiotics are "good" bacteria that help the body's digestive tract. Prebiotics are food ingredients that help support growth of probiotic bacteria. Follow the links below to find WebMD's comprehensive coverage about what probiotics and prebiotics are and how they work.
The 17 Day Diet
This review provides information about "The 17 Day Diet," including dietary restrictions, effectiveness, and level of effort.
Probiotics for Digestion: Questions for Your Doctor
Find out the pros and cons of probiotics -- the "good bacteria" -- to treat or prevent digestive problems.
What Are Prebiotics?
Learn about prebiotics -- their benefits and how they work, supplements and foods with prebiotics, the best prebiotics for different conditions, and possible side effects.
Probiotics for Diarrhea
Probiotics may help prevent travelers' diarrhea, diarrhea from antibiotics, and more. A guide to the best sources and kinds of probiotics.
Answers to Your Questions about Probiotics
Here are some answers to five common questions about probiotics and the products that contain them, from yogurt to supplements.
Probiotics and Digestive Problems
A look at how probiotics may benefit diarrhea, pouchitis, irritable bowel syndrome (IBS), and ulcerative colitis.
Why Is Kefir Good For You?
Kefir is a tangy, tart, yogurt-like drink teeming with good bacteria for your stomach.
Why Is Greek Yogurt Good For You?
Greek yogurt is blowing up the dairy case. It's creamier and more nutritious than traditional yogurt.
Slideshows & Images
Foods With Probiotics
Beyond yogurt, see which foods have a surprising boost from probiotics -- good bacteria that may help tame your digestive problems.
8 Digestive Health Supplements
See 8 supplements to improve digestive health, including probiotics, psyllium, ginger, l-glutamine and more.
Ulcerative Colitis Diet Tips and Mistakes
See how diet can affect your ulcerative colitis. Learn what foods can aggravate it and how to get the nutrition you need.
What to Do When Ulcerative Colitis Flares
Get tips to help soothe ulcerative colitis flares, from diarrhea to pain and fatigue. Learn how to fight back with medication, diet, and more.