Lactose Intolerance

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A condition that exists in some adults that have low levels of the intestinal enzyme β-D-galactosidase or lactase. Most of the lactose ingested passes undigested to the colon where it is fermented to large amounts of CO2 and H2, leading to a gassy stomach. This condition can be ameliorated by consuming commercially available milk that has had its lactose enzymatically hydrolysed.