Some are intolerant to this disaccharide present in milk
... Lactose intolerance can be caused 
by some diseases of the digestive system and by injuries to the .... disaccharide 
intolerance inability to properly metabolize one or more disaccharide(s), usually... [DOC] [TLE] Making the Most of Milk: Understanding Lactose Intolerance [PAR] Students will learn what causes lactose intolerance and carry out a laboratory 
activity to test ... found in milk, is also a disaccharide and it is composed of 
glucose and galactose.