While environmental allergies enter our body through the nose and mouth, and can be avoided or removed, the reaction to the food allergy happens inside the body and that is what makes it much more dangerous.  As the person eats the food he is allergic to, he might feel an itch in his mouth, then when the food is in the stomach he might start vomiting, when the allergens reach and travel trough the blood stream it might cause a drop in blood pressure.

The histamines that are released into the blood can attack the ears, and they will itch, the skin and the body will develop hives or if the attack happens in the stomach it may manifest itself as pain or diarrhea.

The foods that are most common to cause allergies are shell fish (shrimp, crab, lobster), eggs, nuts and peanuts.

In small children the allergy can be caused by milk, eggs and peanuts and they can outgrow them. Adults who develop an allergy to certain food will keep it for the rest of their lives.

Not all intolerance for food is considered allergy. Lactose intolerance affects about one in ten people. It is caused by a different substance. The body doesn’t have enough enzymes to break down the milk. Instead the bacteria in the stomach feasts on it, creating gas and bloating.

The most dangerous for children is the peanut allergy, especially in the United States. It’s interesting to note that different countries have problems with different food allergies. In the United States the peanuts in it’s various forms as peanut butter is highly popular. In japan the most common food allergy is to rice. In Scandinavia it is to cod fish.

The danger in peanut allergy for kids is a severe drop in blood pressure, swelling of the throat up to almost a complete closure that might be fatal. The main treatment is to avoid those foods all together because the allergy might be triggered by a very small amount of the allergy causing substance.

People with severe food allergies have to be able to treat themselves when they accidentally ingest a minimal amount they were not aware of. They should carry with them, always, a syringe with adrenaline and be prepared to self inject when they think they are getting a reaction for something they ate. The symptoms can come about in a matter of minutes.

Allergy is when our body react to harmless intruders, such as pollen, as if it was an enemy. The body produces an antibody which attacks the intruder and binds with him. Our body releases a chemical into the blood stream called Histamine. This substance causes most of the symptoms we call allergy.

There are many kinds of allergies; seasonal allergies that are connected to pollen, dander allergy connected to reactions to animals like cats and dogs, food allergies and insect sting allergies.

When the symptoms are mild, the allergy goes almost unnoticed. Moderate allergy is when you feel like you have a cold or a flu. Severe allergies can be life threatening. Most symptoms of the mild allergy will go away after the source of the allergy is removed. In sever allergies the reaction of the body already started and only an antidote will stop the symptoms.

Most people are aware what triggers their allergic reaction and try to avoid it. The allergic reaction is unique to the person. A plant that causes watery eyes and itchy nose in one will not have the same affect on another.

There are a few way to fight allergic reaction. The abundance of over the counter medicines is a testament that many people suffer from allergies and that the drugs help lessen the affect. Another treatment is monthly shots that eliminate the necessity of the daily drug.

Yet another way to fight the allergy is to find out what causes it, if the source is not obvious. This is done by injecting small amounts of allergy causing material into the body and seeing to which one of those you are allergic. It is a lengthy process that sometimes requires a hundred shots to be administered before you find the one that triggers an inflammation. After that you can avoid the allergy causing element, or, and this is a new method, expose the body to small amounts of the allergen for a period of time until your body develops tolerance to substance.