What's the difference between food intolerance & food allergy?

FOOD ALLERGY: A disorder of the immune system. This involves your body being hypersensitive to a particular substance/chemical found in particular foods. When a person consumes a substance they are allergic to, the body’s immune system overreacts believing the substance/chemical is a foreign invader. As a result a certain type of white blood cell becomes activated and releases antibodies which cause inflammatory responses similar to when you are ill. FOOD INTOLERANCE: The name given to a very broad range of different disorders (which are not allergies). However in most cases it refers to a disorder of the digestive tract. This type of intolerance is where your body has trouble absorbing or processing certain chemicals/substances in particular foods. For example gluten intolerance involves the intestines have trouble breaking down gluten. As a result the gluten builds up on the intestine walls preventing the intestines absorbing other essential nutrients.

Food intolerance means the body cannot properly digest the food that is eaten or

a particular food might irritate the digestive system.

A food allergy occurs when the body's immune system, which normally fights infections, sees the food as an invader.

  food allegery causes an immune system reaction that affects numerous organs in the body. It can cause a range of symptoms.

 allergic food reaction can be severe or life-threatening

food allergy causes an immune system reaction that affects numerous organs in the body. Food intolerance  generally come on gradually and don't involve an immune system reaction.