Homepage » Health Condition Videos » Allergy Videos » Why Do We Get Allergies?

Why Do We Get Allergies?

Allergy Videos

According to Dr Peter Saul, a UK allergy specialist, allergies date back to a time when parasitic infections, like worms and bugs, were common. Whilst these problems are still common in some parts of the world, the majority of the UK is free from such parasitic illnesses. However the body still has the capacity to treat a foreign substance, like an allergen, as hostile. So why do we get allergies and experience allergic reactions?

Other reasons people suffer from allergies may include environmental changes like cleaner houses. This can trigger allergies because our bodies are not exposed to as many allergens, like dust, and cause a greater sensitivity to them later in life.

Dr Peter Saul uses the following simple example to describe why people suffer from allergies:

"Think of the body like a shop. If you walk in through the front door of this shop you get treated like a customer. Similarly, if substances go in through your mouth the body recognises it as a foreign protein but as it enters through the mouth also recognises it as food. Now say you climb over the wall at the back of the shop, the shop owner is likely to be suspicious that you are going to steal or cause trouble. This is what we think happens with allergies. The protein, instead of coming in through the front door actually comes in over the fence and you develop an allergic reaction to that particular food. So the next time it goes in through the mouth, hey presto, you have an allergy."

This is particularly true in the case of skin allergies, like eczema. Particles of food protein which enter the body through the skin cause the body to treat them as a hostile substance.


Allergy Specialist


10029 Published May 2009 

Revised November 2012

Review Scheduled November 2013

comments powered by Disqus
Kings Point Indoor Tennis 143 Steamboat Rd Great Neck, NY (516) 466-0333 1 PLAYER 1h/$80 5/$350 10/$675
The recommended propecia generic dosage is one 1 mg tablet daily. 'Propecia' may be taken with or propecia cost without food. There is no evidence that an increase in abortion pill misoprostol dosage will result in increased efficacy.