"Researchers analysed dust samples from the homes of 1,050 tots aged three to four-months and tracked them until they were five years old. Over this period, 6.6 per cent were diagnosed with asthma. Analysis revealed babies exposed to higher levels of the allergen Can f1, which is shed in dog skin and saliva, had a 48 per cent lower risk of developing the lung condition, compared with other babies."
"They also appeared to have better lung function - as measured by a test to see how much air they could blow out in one second after a deep breath. This protective effect was even stronger among children who were at higher genetic risk of worse lung function, researchers from the Hospital for Sick Children in Toronto, Canada, said. However, no protective effect was found among children exposed to dust with cat allergens or bacterial endotoxin, a molecule on the surface of bacteria."
Dust samples from homes of 1,050 infants aged three to four months were analyzed and the children were followed until age five. Over that period, 6.6% were diagnosed with asthma. Higher exposure to the dog allergen Can f1 was associated with a 48% lower risk of developing asthma and with better lung function as measured by forced expiratory volume in one second. The protective association was stronger among children with higher genetic risk for poorer lung function. No protective association was observed for exposure to cat allergens or bacterial endotoxin. Early dog allergen exposure may alter the nasal microbiome or immune responses, but mechanisms remain unclear.
Read at Mail Online
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