Health Glossary - For Everyone

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What are allergies?

An allergy is an excessively exaggerated immune response or reaction to a substance that is generally not harmful to most people.

Allergic reactions can vary from a mild one to the very severe. Interestingly, some children grow out of their allergies, while others do not.

People with allergies are often sensitive to more than one substance. The most common substances that often cause allergic reactions are:


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Important facts about allergies

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Why allergies are important

Allergies can cause the following symptoms:

The part of the body that is in contact with the allergen is what has an impact on the symptoms that develop.

Symptoms of allergies vary among person to person in their severity. Even at their worst, allergies generally will not kill you, although they will make you feel bad. However, some people can experience a really rare and extreme allergic reaction (called anaphylaxis) which is very much life-threatening. Anaphylaxis is normally treated with adrenaline.


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Last reviewed: 14 January 2007 || Last updated: 21 August 2007


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More information

To learn more, go to the following sites:


NOTE: Mega doses of any type of vitamin, mineral, amino acid or herbal supplement cannot cure illnesses and in fact can be very dangerous and produce toxic side effects and interfere with medicine you are taking. Always ensure you consult your doctor before taking any type of complementary supplements.
Disclaimer: This guide is not intended to be used for diagnostic or prescriptive purposes. For any treatment or diagnosis of illness, please see your doctor.


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