Now, some individuals are basically intolerant to lactose and this condition is commonly known as Hypo lactasia. So what happens is these individuals who have Hypo lactasia basically have some type of deficiency in the activity of this lactase enzyme. And so if the enzyme cannot actually carry out its function, that means it cannot break this bond, it cannot break the bond. And so if these two individual monosaccharides will not be formed, then this disaccharide will not be uptaken by the cells of our body. And so there will be a build up in the lactose, in the lumen of our colon and the small intestine. So colon is the large intestine and this causes symptoms such as gastrointestinal discomfort, so flatulate, this basically means the passing of gas digestive problems.