Lactose intolerance is NOT the same as a dairy allergy. A dairy allergy produces allergic reactions. Lactose intolerance is caused by your body's inability to produce Lactase, the enzyme needed to digest Lactose, the sugar in milk. What results is that the Lactose ferments in your system, instead of being digested, resulting in gas, bloating, etc. 70% of the population of the planet is Lactose intolerant to some degree. Heck, I am. I just have to stay away from foods containing dehydrated dairy products, especially Hamburger Helper Beef Stroganoff, Cheetos, Doritos, etc.