Comment Re:North Americans? What, like the Sioux? (Score 1) 309
They are talking about genetic differences in gut bacteria, not genetic differences in people. This has nothing at all to do with genetic differences between Europeans, Native Americans and Japanese. It has to do with the bacteria currently living in the guts of those born in Japan vs. those born in the US. Thus they really do mean "North Americans" as in "people currently living in North America", a set that includes people of European, Native American, African and presumably even Japanese ancestry.