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When George eats ice cream, his body perceives the protein in dairy as an invader and his immune system acts to destroy it. George’s reaction to ice cream can best be described as:

A Dairy allergy.

When George’s immune system reacts to ice cream, it is an example of a dairy allergy.The differentiating factor between lactose intolerance and a true dairy allergy is whether or not the immune system is involved. Lactose intolerance means the body is missing the lactose enzyme and cannot break down the sugar found in dairy products. George’s immune system, on the other hand, overreacts to the protein in dairy.