Cheap gene sequencing has spurred an explosion of research on the bacterial flora in your gut and its links with various diseases and disorders. (Obesity, mood

Cheap gene sequencing has spurred an explosion of research on the bacterial flora in your gut and its links with various diseases and disorders. (Obesity, mood disorders, irritable bowel/Crohn's, I forget what else.) There's a Coursera class in progress on this right now (https://class.coursera.org/microbiome-001/ https://class.coursera.org/microbiome-001/) run by Rob Knight at UC Boulder. Another interesting thing to look at is the American Gut (http://americangut.org/ http://americangut.org/) project, which will analyse a sample of your gut bacteria for $100.