The allergy enigma

One in four European children under the age of 10 suffers from an allergy. Why is this a growing problem? Are the causes environmental or hereditary? Why is it that, despite relatively homogenous lifestyles in apparently comparable countries, the percentages of allergy sufferers show such marked contrasts? All in all, the scientists have certainly not finished grappling with the allergy headache. As part of their efforts, 25 leading research teams have come together within the GA2LEN European network of excellence.