ý

Food allergy and food intolerance – CCEADifference between an allergy and intolerance

A food allergy is when the body's immune system reacts unusually to specific foods. Food intolerance is more common than food allergy and is not caused by the immune system.

Part of Home Economics: Food and Nutrition (CCEA)Shopping, storage and preparation

What is the difference between an allergy and intolerance?

  • Symptoms of food intolerance usually occur several hours after eating the food, whereas an allergy can result in an immediate reaction
  • Often people need to eat a larger amount of food to trigger an intolerance than an allergy.
  • Unlike an allergy, a food intolerance is not life threatening.

Symptoms

Food allergyFood intolerance
Swelling of the tongueStomach pain
VomitingBloating
Shortness of breathDiarrhoea
Itchy skin or rashStomach rumbling
DizzinessFlatulence
Food allergySwelling of the tongue
Food intoleranceStomach pain
Food allergyVomiting
Food intoleranceBloating
Food allergyShortness of breath
Food intoleranceDiarrhoea
Food allergyItchy skin or rash
Food intoleranceStomach rumbling
Food allergyDizziness
Food intoleranceFlatulence

Related links