Food allergies and food intolerance are quite different in terms of their origin, symptoms and treatment.
ALLERGIC REACTIONS involve the body’s immune system. When the body identifies a food as harmful, the white blood cells produces antibodies directed against that food and become sensitized. The next time the food is consumed, the body mounts an immune response with the release of histamine and other chemicals that trigger allergic symptoms. An example of a food allergy is to peanuts. With a food allergy, symptoms may occur almost immediately or up to hours after consuming the particular food. These symptoms may affect the respiratory, gastrointestinal tract, cardiovascular system or the skin.