Since the 1950’s allergic diseases such as asthma, hay fever or atopic eczema have become five times more prevalent and are still on the rise. The blame for this circumstance can mainly be placed upon the increased amounts of noxious substances and chemicals in our environment. This includes air-pollution (mainly due to automobiles), the increased use of medications and vaccinations, as well as chemicals found in food products, cosmetics, and textiles.
Another factor seems to be the exaggerated hygiene practiced on children, which prevents pathogen contact to the immune system. Children that overcome multiple infections as infants are less likely to develop allergic diseases. Stress, which is ever increasing in our society, also influences the development of allergies.
Specifically vulnerable to allergic diseases are children in families with a history of allergic diseases.