Food allergies occur when there is an altered immune response. They can occur in three ways: by food intake through food contact with skin or exposure of food in the airway.
There are many factors involved in immune tolerance of food as:
- genetic load
- the state that is the intestine, since minor alterations or inflammation in the intestinal wall may favor the passage of allergenic substances in the blood
- age, being more frequent occurrence during childhood
- food cross-reactivity with other pollens, mites or latex; because if an adult is allergic to pollens that looks similar to a certain food allergen can manifest this food allergy
Foods that cause allergies
Regarding the food and the geographical area of residence customs, there is a food group that are most involved in the development of allergies in people.
In Western countries, the leading cause of childhood allergy are milk and egg. Adult population in the Mediterranean peach and seafood are the main causes of allergy. In areas of grasses, as the center of the Iberian Peninsula, allergies to fresh fruits like peaches, apples, cherries, kiwi, melon and nuts such as hazelnut and walnut appear.
In countries like the US. and UK peanut is the main cause of food allergy because of the wide use in various food presentations.
Are food allergies inherited?
Food allergies are not inherited itself, which is the inherited tendency to be allergic. For example, if one parent is allergic, the likelihood that your child is allergic is 40%. You can be allergic to food or not, depending on exposure have this food. When the child is older, more likely to have allergies to inhalants such as pollens, mites, fungi and animals.
You can cure food allergies?
Most food allergies are manifested throughout life, so that consumption of these foods should be avoided. However, food allergies appear during the first year of life, such as milk and eggs, can disappear with a strict diet that avoids these foods for a few years and after development of tolerance to achieve them.