Health Encyclopedia  Is It a Milk Allergy or Intolerance?   Most
children with a milk allergy will outgrow it between 5 and 8
years of age, according to the American Academy of Allergy,
Asthma and Immunology (AAAAI). Children who develop milk
intolerance will not outgrow it.   Missing enzyme   When there
is not enough lactase, an enzyme needed to digest the amount of
lactose consumed, the results can be very distressing--stomach
cramps, bloating, gas, and/or diarrhea.   Allergies and the
immune system  A food allergy is an immune system response to a
food that the body mistakenly believes is harmful. Once the
immune system decides that a particular food is harmful, it
creates specific antibodies to it. In milk—and all food
allergies—the culprits are proteins.    All children with a milk
allergy need to avoid milk.  Two types of hypoallergenic
formulas are approved by the FDA for infants with a milk
allergy. One is made from cow’s milk in which the proteins have
been broken down into small particles; the other