Apparently everything causes asthma: smoking in pregnancy (although if you also eat apples you may balance this out a bit), even car seats for crying out loud, as well as a whole host of genetic factors, environmental factors, and lack of exercise. Ooh, lack of exercise? Maybe we could take care of that one with some swimming? Swimming's good exercise, right? Good for you?
Uh, no, actually, because swimming seems to be a contributor to asthma. Yep, kids who began swimming as infants were found to have asthma-type symptoms later on, as opposed to kids who began swimming when they were a bit older. What next, asthma gods, what next? Will you not be satisfied until every kid wheezes and complains of chest pain? What must we sacrifice in order for you to be sated? What? What?!
No word as to why indoor pools were targeted as opposed to outdoor pools. Or lakes. But then, no one swims much in lakes anymore, because there's you know...lake monsters. Exposure to which probably causes, you guessed it, asthma.