Just a mouse study, but published in Science and argues that keeping too clean is harmful:
http://the-scientist.com/2012/03/22/let-them-eat-dirt/
Archive for the 'PopSci' Category
“Let them eat dirt”
March 24, 2012Op-Ed: How Traditional Publishing Hurts Scientific Progress | Wired Science | Wired.com
March 22, 2012Stanford gene researchers see diabetes develop
March 17, 2012http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2012/03/15/BAMD1NKUNI.DTL
Nice quotes from other bay area personalgenomicists
linkstream2 microblog 