Allergies: Facts about the most common chronic diseases

More and more people are suffering from allergies. They have increased sharply in recent decades, especially in industrialized countries. Not only adults are affected by allergies. They are now also among the most common chronic diseases in childhood. They can have an immense impact on the quality of life of those affected, because they put a lot of strain on the body and the psyche.

An allergy is an overreaction of the immune system to certain components of, for example, grass or pollen, so-called allergens. Allergens are completely harmless substances that occur and are widespread everywhere in our everyday lives.