A variety of food products that may or may not be probiotic, prebiotic, or just contain good microbes. They include soda, olives, kimchi, yogurt, pickles, cheese, kombucha and sourdough bread. (Greg Urquiaga/UC Davis)

The Proliferation of Probiotics

Are all the products on store shelves that claim to be probiotic or prebiotic really good for you? A UC Davis microbiologist separates hype from health.
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