Reactions to Food Allergies

What Is Reactions to Food Allergies?

A food allergy happens when the immune system responds to a food that is harmless as if it were a threat. First time when a person eats that food, there are no symptoms. However, when you eat the food again, there is an allergic response. Any allergic reactions to food, takes place after several hours of exposure to the allergen. There are many things that can affect the timing and location of the reaction like the eating time, food digestion, and finally the location of immune cells.

Reactions to Food Allergies

Food allergic reaction happens in two steps. They are:

Step 1:

When you are exposed to the allergen, your immune system releases particular IgE  (immunoglobulin E) antibodies to that allergen. IgE antibodies are circulated throughout the blood and get attached to different types of immune cells called the basophils and masy cells. The mast cells are found in all the body tissues, especially in your throat, nose, skin, lungs, and gastro-intestinal tract. Whereas the Basophils are found in the tissues and blood that are inflamed due to an allergic reaction.

Step 2:

Exposure to the same food next time results in the binding of  IgE antibodies, which are get attached to the basophils and mast cells. This binding signals the cells to release huge amounts of chemicals like the histamine. You will have food allergy symptoms depending upon the release of these chemicals on which ever tissue. The symptoms can range from severe to mild. However, a severe allergic reaction can cause life-threatening condition called the anaphylaxis.

If you have a family history of food allergy, then you are at a greater risk of developing this food allergy. Some of the common family allergies that pass on to the other generation are eczema and asthma. So, if you have a family history of any type of allergy then you need to be very cautious and take care of yourself.

Foods that Trigger Food Allergies

  • Eggs
  • Fish
  • Tree nuts like pecans and walnuts
  • Peanuts
  • Shellfish like lobster, crab, and shrimp

Common Food Allergies in Children

  • Wheat
  • Tree nuts
  • Peanuts
  • Milk
  • Eggs
  • Chocolate rarely triggers food allergy

So, these were the main allergic reactions to food. I hope that you have understood the mechanism of an allergic reaction. Now that you have come to know, why don’t you avoid such foods for an allergy free and healthy life!


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