Allergies can be a benchmark for the progress of a country. The better environmental sanitation and hygiene a people so there was hardly any infection, the higher the incidence of allergies such as asthma.

Allergy is an immune system response to excess of a normally harmless substance, such as food or dust. “Allergic disease is closely related to the immune system of children,” said Professor Sibylle Koletzko, child health experts from Germany.

He added that in recent decades an increase in allergy cases, along with a decrease in the number of infectious diseases, like tuberculosis or measles. The risk of allergies in children exposed to urban or rural areas alike.
There’s an interesting theory about the increasing cases of allergy, namely in countries where high infection rates, lower incidence of allergy. Not rare in developed countries that completely clean and sterile, very high incidence of allergy.

“Children who have a worm infection, is rarely affected by allergies,” he said. According Koletzko exposure, infection makes the body’s immune system is busy to develop allergies.

In simple terms can be explained that appear least associated with allergic T cells, namely a kind of cell that plays a role in the immune response, particularly in identifying a foreign object enters the body and may cause illness.

There are two T cell, called T helper 1 cells (TH 1) and T helper 2 cells (TH 2). Tues TH 1 increase when an infection, while TH 2 when someone allergic. In healthy conditions, the TH 1 and TH 2 in the body are in balance state.

The more often a person exposed to infection, the TH1 cells are working and TH 2 cells will be suppressed so that the allergy will not appear. This is what explains why in a clean environment, the allergy cases is low.

That’s why it is necessary preventive measures to prevent allergies, for example by maintaining a balance condition of the body to the T cells.