Etiological factors contributing to lactose intolerance, Biology

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Q. Etiological factors contributing to lactose intolerance?

The etiological factors contributing to lactose intolerance include:

• Genetic factor

• Reduction in jejunal lactase activity due to infections in the gut.

• Any structural damage to the jejunal mucosa in disease conditions like celiac, tropical sprue, colitis in which the jejunal vili are structurally damaged.

• Surgical causes '.in which large part of jejunum is removed.


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