Allergic diseases are now extremely common, having increased in frequency over the last 30 years. More than 30% of the total population suffers from excema, hay fever or asthma--which apparently have become diseases of ′modern′ society.
Allergic diseases are now extremely common, having increased in frequency over the last 30 years. More than 30% of the total population suffers from excema, hay fever or asthma--which apparently have become diseases of ′modern′ society.