Classified as a phosphoprotein, this substance is a protein that is most commonly associated with and found in milk and cheese products. Caesin is often removed from dairy products to be used as an ingredient and component in many other food and industrial products. In various foods, Caesin is added to improve texture, to act as a binder and to add nutritional value. For industrial products, Caesin is used most notably in the production of adhesives, cosmetics, coatings, paints, plastics, and textiles. Caesin has been associated with digestive problems that may occur in people suffering from autism. Although it is generally easy to digest as a substance, there is a medical belief that Caesin does not digest properly in a person who is autistic and is therefore, avoided when consuming foods containing this protein.