The Health Benefits of Body Bacteria - Jonathan Eisen

Since humans have had the power to kill bacteria, the general assumption has been that the fewer of the bugs on our body, the better. But microbiologist and professor Jonathan Eisen says this isn't always the case: most micro-organisms are harmless, or even beneficial. He even goes as far as saying that the dirtier someone is, "the more microbes you get exposed to, and the healthier your immune system seems to be." He also explains how probiotics help maintain health, and some pets have a disgusting habit that could be done in the search of bacteria to soothe the intestines.