What's "Fermicutes" and "Bacteriodetes"?

Question

I've read an article that sad these things influence people to be fatty or skinny.

But I've never heard about "Fermicutes" and "Bacteriodetes"
So...

Who can explain to me what are thses and their functions?

Please~

Answer 1

From http://www.bacterialphylogeny.com/group_specific/FCB.htm

The Fibrobacteres, Chlorobi and Bacteroidetes are presently recognized as three of the main divisions (or phyla) within Bacteria.

From wikipedia:

http://en.wikipedia.org/wiki/Firmicutes

The study you are referring to is not conclusive. The authors recommend the following when referring to their work:

From http://www.medpagetoday.com/Pediatrics/Obesity/tb/4750

Action Points

* Explain to interested patients that the studies described here provide intriguing clues to the potential role of intestinal bacteria in obesity.

* Point out to interested patients that the intestines are a bacterially rich and complex environment, and that it is unclear whether the findings from these studies could translate into treatments for obesity.