an nice clear update on some of the new science of the human microbiome: by Noubar Afeyan, World Economic forum blog 3/14/14
The gut bacteria that can restore your healthhttp://forumblog.org/2014/03/gut-bacteria-health-microbiome/?sf2152222=1
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"Some people suggest there are at least 10 times more genes in the microbiome than in the human genome. My guess is that the resulting difference is much larger than 10 times, because the diversity in function is not a linear product of the number of genes; it is the product of the interaction of genes. With three genes, you could see all sorts of interactions. If you have 3,000, or 30,000, the potential interactions grow exponentially. It is clear that the metabolic potential – by which I mean the ability to synthesize chemicals in the gut, or degrade chemicals – is really vast, and differs between individuals. The population of genes cohabiting with us is huge, dynamic and diverse."
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