Reminds me of an old saying here, "Dreck isch gsond." ("Dirt is healthy."). Science seems to agree: http://www.nature.com/news/early-exposure-to-germs-has-last

Reminds me of an old saying here, "Dreck isch gsond." ("Dirt is healthy."). Science seems to agree: http://www.nature.com/news/early-exposure-to-germs-has-lasting-benefits-1.10294 http://www.nature.com/news/early-exposure-to-germs-has-lasti...