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August 28, 2012 7:24 AM

Duke study pinpoints breast milk benefit

It’s widely known that human milk makes for healthier infants than formula, but not all of the reasons are clear. Duke University Medical Center researchers may have just found one: Human milk promotes the growth of “biofilms” of beneficial bacteria that line the intestinal tract of healthy babies, helping digestion and the development of the immune system and acting as a barrier to bad germs.

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