From my understanding, it is the ends of the villi that produce the lactase that helps digest the lactose in milk. When the villi are damaged and inflamed, they don't produce the lactase which leads to lactose intolerance. Some individuals however may have a preexisting intolerance unrelated to the small intestinal damage. NCGI does not damage the small intestine.
ScarletgrrrlMember Since 01 May 2013
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30 Jul 2013 - 05:50