HN210 Lecture Notes - Lecture 5: Lactose Intolerance, Milk Allergy, Lactase
Document Summary
Lesson 4 - lactose intolerance and the major disaccharides: definition, structure & Lactose intolerance is a condition in which the body is unable to fully digest lactose, a type of sugar found in milk and milk products. Lactose intolerance is caused by a deficiency of the enzyme lactase, which is produced by cells in the small intestine and is responsible for breaking down lactose into two simpler sugars, glucose and galactose. When lactose is not properly digested, it can cause a range of symptoms such as bloating, gas, diarrhea, and abdominal pain. There are several types of lactose intolerance, including primary, secondary, and congenital lactase deficiency. Primary lactose intolerance is the most common type and occurs when the body naturally produces less lactase as a person gets older. Secondary lactose intolerance is caused by damage to the small intestine, such as from an illness or surgery, and can be temporary or permanent.
