Allergies: Secret enemy of man

Allergic reaction between are very common and almost no people who during
Life had an allergic reaction. Allergic disease linked
for an organic system affecting more than 30% of the population of
which 25% of young people have an allergic disease.
Are more common among young people in developed countries, the urban
population. In recent years, there is a growing trend of people
allergies of various kinds.