By law, all fluid milk sold in Canada must be pasteurized. This is necessary to kill any harmful bacteria that may find their way into milk. Pasteurization also destroys spoilage organisms, which ensures a longer shelf life for the milk. Milk is natural i.e. nothing is added except vitamins A and D, which is also required by law. The sugar in milk is naturally occurring. For more nutrition related information, please visit the BC Dairy Foundation website.