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HOUSTON, Texas (KPRC) -- It seems everywhere you turn, there are products on store shelves claiming to contain probiotics such as yogurt, cosmetics, even toothpaste.

Probiotics are live microorganisms that can help boost the "good" bacteria in your gut. They've been around for hundreds of years, but these days, it's a fad that comes with some folly.

Houston Methodist chief of gastroenterology and hepatology, Dr. Eamonn Quigley, literally wrote the book, in fact several books, on probiotics.

"There are more misconceptions than truths out there about probiotics. If you have a probiotic out there, you should be able to state that it is live and it maintains life during the duration of the shelf live of that product," he says.

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