Fwiw: OT: Bacteria Divide People Into 3 Types

[Guest guest]

thought this was interesting:

http://www.nytimes.com/2011/04/21/science/21gut.html?_r=1 & ref=science

Bacteria Divide People Into 3 Types, Scientists Say

By CARL ZIMMER

Published: April 20, 2011

In the early 1900s, scientists discovered that each person belonged to one of four blood types. Now they have discovered a new way to classify humanity: by bacteria. Each human being is host to thousands of different species of microbes. Yet a group of scientists now report just three distinct ecosystems in the guts of people they have studied.

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Gut microbes help digest food and synthesize vitamins.

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Blood type, meet bug type.