Lactose is a type of sugar found in milk and dairy products. It is made up of two simpler sugars, glucose and galactose. When we consume lactose, our bodies break it down with the help of an enzyme called lactase. Some people, however, do not produce enough lactase, which can lead to lactose intolerance. This means they may experience discomfort after eating dairy. Lactose is important for providing energy, especially for infants who rely on their mother's milk. Many dairy products, like cheese, yogurt, and ice cream, contain varying amounts of lactose. For those who are lactose intolerant, there are lactose-free alternatives available, making it easier to enjoy dairy without discomfort.