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WHAT ARE FOOD ALLERGIES?

food allergy occurs when the immune system reacts to a particular substance (allergen) that is well tolerated by most people. The allergen is mainly a protein of a food with which the contacts affected by ingestion, or inhalation. The most common reaction is the formation of IgE antibodies (immunoglobulin E)

The process is as follows: The first time you eat the food that causes allergy, the body produces IgE directed against a protein of that product; the second time, the antibodies react against food by stimulating the production of histamine and other chemicals (called mediators) that cause allergy symptoms, hives, eczema, angioedema (swollen lips, fingers, hands, feet, etc.), dermatitis atopic and anaphylactic shock-rare-if the allergic reaction affects several organs, and can compromise the health of the baby.

clinical manifestations of allergy can have an acute onset in the first six months of life, with severe diarrhea, vomiting, abdominal pain, fever., Or a late onset disease with growth retardation (weight and height), bulky stools, abdominal distension and signs of malnutrition and iron deficiency anemia (due to poor absorption of iron).

50% of food allergy develops in the first year of life

feeding the child in its first year of life is crucial to enhance your body's natural defenses against food allergens. Allergy experts agree that breast feeding should continue, at least in this first year and delay the introduction of potentially allergenic foods as those containing gluten (wheat porridge, oats, barley or rye), cow's milk, eggs, fish and soy until after 12 months of age, especially when there are family genetic backgrounds predispose them to allergies.

susceptibility to one or the other food also varies by age

In the first year of life, the greatest threats tend to focus on milk, eggs, fish and cereals.

In the second, the most troublesome foods include fruits (especially the rose, peach and apricot) and citrus. In the third year of age, they become part of the list of fish and nuts (peanut, hazelnut, walnut and almond).

The duration of these boxes throughout life is also variable. In the first year of life, milk allergy, for example, is usually transient, resolving at 18-24 months. In contrast, egg allergy usually lasts 10 to 15 years or a lifetime. Hypersensitivity to nuts and fish also is durable.

Moreover, in a report published by the Bulletin of the European Food Information Council (EUFIC), warn that food allergies vary from local complementary foods: For example, the reactions to rice are more frequent in Japan in Europe, and what were the reactions to peanuts in the U.S., until its recent rise in Europe.

Dietary treatment of these allergies is the most effective is to remove food allergies. This will get you within a few years the immune system to normal, and in many cases, the child just tolerate foods that produce allergies.

However, in many cases the elimination diet may pose problems since allergenic substances are not listed on labels (food withheld). There are no clear rules about it and some foods or substances when found in low proportions are not included in the labeling.