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Lactose Intolerance

by Victoria Groce
for About.com

Updated June 09, 2008

About.com Health's Disease and Condition content is reviewed by our Medical Review Board

Definition:

An abnormal sensitivity to lactose, the predominant sugar found in cow's milk, due to a deficiency in a digestive enzyme called lactase.

Examples:

People with lactose intolerance can take lactase enzyme supplements to help their bodies digest lactose sugar.

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