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.