What are the symptoms of food idiosyncrasies?

It has been recognized for a long time that certain individuals are peculiarly intolerant to particular foodstuffs, the ingestion by them of such foods, even in minute quantity.

Food intolerance is an umbrella term used to describe food allergies and food idiosyncrasies. A food idiosyncrasy can be a non-pathological inability to digest particular food or even a simple dislike.

An adverse reaction to a food additive is also known as a ‘food idiosyncrasy’ because symptoms such as asthma and headache occur through unknown mechanisms, may be of psychosomatic origin. A large number of different mechanisms could be involved in these idiosyncratic reactions.

As expected, the symptoms associated with wide variety of illness range from the trivial to severe life-threatening reactions.

One of the common food idiosyncrasies is sulfite sensitivity. Sulfites are preservatives used most commonly in wine and dried fruits and vegetables.

People who are sensitive to sulfite can have such severe reactions that range from shortness of breath to fatal shock. Some experience severe asthma attacks when exposed to sulfites.

Person suffering from this food sensitiveness frequently have been affected from early infancy, while in a few cases there is a history of hereditary transmission.

‘Inborn errors of metabolism’ are examples of defined food idiosyncrasies and occur when certain enzymes are missing from the digestive tract and/or element from the process of absorption.

These are due to a genetic glitch, such as a primary lactase deficiency, or phenylketonuria.
What are the symptoms of food idiosyncrasies?