Eat some dirt

There was an interesting Op-Ed piece in the New York times yesterday.

Dirtying Up Our Diets

http://www.nytimes.com/2012/06/21/opinion/lets-add-a-little-dirt-to-our-diet.html?_r=2

I can't really sum it up any better than this:  "Increasing evidence suggests that the alarming rise in allergic and autoimmune disorders during the past few decades is at least partly attributable to our lack of exposure to microorganisms that once covered our food and us."