Gut Flora

http://www.msnbc.msn.com/id/10754238/site/newsweek/

Do we have symbiotic bacteria in humans? Definitely!!

In this current article, we see the benefit that microorganisms offer in terms of digestion. These bacteria play an important role in the digestion of foodstuffs, and as the article points out, may benefit us indirectly by warding off bacteria that are harmful.

This finding is not new, however. There are examples all over the natural world of bacteria aiding in digestion and it appears as though this is a common theme. The gut of higher organisms offers a well-regulated climate controlled environment, while the bugs offer a few enzymes that their hosts lack.

It would appear that the results are mutualistic.