What Causes High Asthma Rates in People Who Live in Cities?

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Do scientists have any idea what causes increased asthma rates in cities? This is really interesting. It looks as though neighborhoods with more cockroaches have more asthma. One in four kids with asthma who were allergic to cockroaches versus one in ten who are not. The cockroach proteins are what the kids seem to be reacting to.

Cockroach proteins. [LAUGH] What about kitty cats, do they increase the risk for asthma? You know you would think they did, but they don't. No? What about pollution and things like that? That [INAUDIBLE] right? [INAUDIBLE] Yea, certainly add to it and believe it or not fast foods does also.