Babies who grow up around dogs might be less likely to develop childhood asthma, a new study says. However, they don’t get the same protection from growing up around cats, according to findings presented Sunday in Amsterdam at a meeting of the European Respiratory Society. “We found that, while cat allergens showed no association, exposure to dog allergens was linked to improved lung function and a reduced risk of asthma,” researcher Jacob McCoy said in a news release. He’s a graduate student at the Hospital for Sick Children in Toronto, Canada. For the study, researchers analyzed samples of dust taken from 1,050 Canadian babies’ homes when they were 3 to 4 months old. The dust samples were tested for three potential allergens: Can f1, a protein shed in dog skin and saliva; Fel d1, a protein shed in cat skin and saliva; and endotoxin, a protein found on the surface of bacteria. The team then retested the children for asthma at age 5. Their lung function was measured by the amount of air they could exhale in one second after a deep inhale. Babies exposed to higher levels of the dog allergen had a 48% lower risk of developing asthma by age 5, results showed. These children also had better lung function. Further, researchers found this protective effect was even stronger in babies with a… read on > read on >







