date:Feb 21, 2013
lobally, the researchers wrote.
The researchers gave food and medical questionnaires to the parents of more than 181,000 children between the ages of six and seven at 64 centers in 31 countries, plus 319,000 children between the ages of 13 and 14 at 107 centers in 51 countries. All the children were taking part in the International Study of Asthma and Allergies in Childhood (ISAAC).
Parents answered questions about how severe the children's symptoms of various allergy-related health problems h