How is lactose intolerance?

A nonallergic reaction that typifies food intolerance would be an acute gastrointestinal response in a lactoseintolerant individual. This patient does not have the enzyme lactase and, therefore, cannot break down sugar lactose in milk and other foods into glucose and galactose The lactose arrives as is in the large intestine where it is fermented by bacteria. Profound diarrhea or vomiting usually results without any other system involved. Food avoidance is the treatment of choice, as it is with food allergy, and over time, food intolerance may resolve.