Early exposure to bacteria protects children from asthma and allergies
From NPR Shots:
Babies who are exposed to both bacteria and allergens in the first year of life are less likely to develop asthma and allergies, a study finds.
It's the latest wrinkle in the hygiene hypothesis - the notion that exposure to bacteria trains the infant immune system to attack bad bugs and ignore harmless things like pollen and cat dander.
But what's interesting about this study is that it gets specific; not just any old germs or allergens will do. Read more.