Dairy-Free Diets

Two components of milk present problems to some people. Lactose, a type of sugar naturally found in milk, cannot be digested by people with lactose intolerance. These people can develop severe digestive problems if they consume lactose. One of the proteins found in milk, called casein, can cause serious illness in people who are allergic to it, and so they must avoid eating dairy products and any prepared food that contains dairy.