One of the reasons I decided to post this was because, over the years we (as a community) have sometimes seems a correlation between allergies/asthma and other things.
e.g. There seemed to be a higher number of families dealing with autism than in the general public is one thing I remember. Another was twins. But that may have been shown to have causation. (Multiple births are often the wonderful result of fertility treatments, and those treatments used to include a shot that had peanut oil in it. I don't know if it does any more, but I remember a discussion on our first board.)
However, I don't recall ever discussing CS vs vag. And I did find it interesting.
Btw, posting this was in NO WAY to lay blame anywhere. It have always completely opposed the "blame mom" nonsense. If they ever do discover a definite cause, it will hopefully prevent future generations from having allergies....but it still won't mean anyone is guilty.