You might see it on the grocery shelves or have a friend who makes it at home. It looks like yogurt and contains more friendly bacteria than yogurt. But what is it?
Mayo Clinic dietitian Anya Guy says kefir is rich in protein, calcium, B vitamins and probiotics.
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Mayo Clinic Minute: What Is Kefir? For Country: United States. City: Cedar Rapids, Chandler, El Cajon, Nashville, Newark
