analyzed questionnaires 4,000 families
children were 2 months, 12 months, 2 years, and 4 years
blood
samples from more than 2,500 children, age 4, were collected
presence of immunoglobulin E (IgE)
According to Swedish researchers: Exposure to secondhand smoke in early infancy can boost a child's risk of developing allergies.
analyzed questionnaires 4,000 families
children were 2 months, 12 months, 2 years, and 4 years
blood
samples from more than 2,500 children, age 4, were collected
presence of immunoglobulin E (IgE)
o released by the immune system in response to allergens
o High levels of IgE- sensitization to allergens.
· Overall:
o 25% of the children had high IgE levels by the time they were 4 years old
o 15% allergic to inhaled allergens
o 16% allergic to food allergens
o 7% allergic to both types of allergens
Compared to children of nonsmokers, children exposed to secondhand smoke during early infancy were almost twice as likely to be allergic to inhaled allergens and about 50% more likely to have food allergies.
