What is lactose mean?

Lactose is a type of sugar found predominantly in milk and dairy products. It is composed of two simpler sugars, glucose and galactose, and is classified as a disaccharide. Lactose is broken down in the body by the enzyme lactase; however, some individuals may be lactose intolerant, meaning they have a deficiency of this enzyme and may experience digestive issues when consuming lactose-containing foods.