Intestinal malabsorption (syndrome) occurs due to pathological interference with the normal physiological sequence of digestion (intraluminal process), absorption (mucosal process), and transport (post-mucosal events) of nutrients in the small intestine. The concept of intestinal failure is a life-threatening severe type of intestinal malabsorption due to short bowel, structural enterocyte defects, and intestinal dysmotility etc.