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 an enzyme called lactase. Some people, however, do not produce enough lactase, leading to a condition known as lactose intolerance. This can cause discomfort when they eat or drink 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, allowing them to enjoy dairy without the discomfort.