Food Intolerance  Test 270 Different foods tested.   Food Intolerance, also known as non-IgE mediated food hypersensitivity or non-allergic food hypersensitivity, refers to difficulty in digesting certain foods. It is important to note that food intolerance is different from food allergy. Food allergies trigger the immune system, while food intolerance does not. Some people suffer digestive problems after eating certain foods, even though their immune system has not reacted – there is no histamine response. Foods most commonly associated with food intolerance include dairy products, grains that contain gluten, and foods that cause intestinal gas build up, such as beans and cabbage.