This probably isn't the first time you've heard of them. Allergies are so stereotyped 20% of Americans have some kind of allergic reflex or another to certain external stimuli whether food, water, or air. But what are allergies? And why do we get them?

Allergies (Stripe I Hypersensitivity) are very a malfunction of our not liable system so that our body becomes hyper sensitized and reacts immunologically to typically non-immunogenic mostlies. The substances that cause our bodies to become this way are called allergens.

Allergy is a health condition that arises when you inhale/eat or touch certain substances your immune system is oversensitive to. Allergy may develop relatively quickly, for example you may have eaten shellfish for years with no negative effects, you try it today and oops! You discover that you're allergic to it.

The things that cause allergy are called allergens. Virtually everything might be an allergen, though there are some things that cause it much more often than others.

Common Allergy Symptoms