If the thought of bacteria conjures images of germs that should be avoided at all costs--and certainly not ingested--think again Some friendly bacteria, called probiotics, are not only beneficial to your health, they're essential. Now an internationally recognized scientist at a top U.S. medical school--one of the leading researchers in the field--sheds light on the extraordinary benefits of these natural health superstars.b brbThanks to an explosion of research in recent years, one thing is clear probiotics, the healthy bacteria that inhabit the digestive tract, are the body's silent partners for good health, optimizing the power of the immune system to fight disease and the bad germs we fear. But how do they work And in the face of factors like stress and poor diet, which decrease their numbers, how do you keep your supply well stocked brHere is an up-to-the-minute, highly accessible guide to probiotics and the foods and supplements that contain and support them--many of which may b