I read a book that relates to this idea, and it was quite interesting. It was called "Survival of the Sickest" and basically talks about exactly what it sounds like. Not only are we living in a world today where the basic "survival of the fittest" premis of Darwin's evolution theories is being thrown to the curb, but we are also helping this process along by making ourselves weaker with all the disinfectants that you mentioned. I know it's definitely true with me... My mom is a complete germaphobe, so I grew up in what Dan equates to a "bubble." Not surprisingly, I developed all sorts of allergies. I spent my first two years of college basically sick from something ALL the time. Then somehow I just started getting sick less and less as I lived in dirty and cramped college house after dirty and cramped college house.

Something I also found interesting was in regards to what impact all these sanitizers are having on the ecosystem. As you all know, my stepdad is a marine biologist. He sent me a publication a while back about how many bacteria, fungi, and algae that thrive in sea waters are undergoing chemical and biological changes caused by their exposure to intense loads of sanitizer by-products being leaches into the water systems when people are washing their hands, clothes, everything else, etc.