Mary wrote:

> Someome suggested UNDAUNTED COURAGE about Lewis and Clark and it was greatI
> kind of had the impression that paleo groups would have perfect teeth?
>
>  I was disheartened to see in  what bad shape some of the tribes were--
> again who had had no contact with civilized foods, so that can't be it.

Actually,  the tribes may have had some agriculture;  I do not know the context
of the discussion you are citing but it should not be presumed that all Native
Americans of the Lewis and Clark era were hunters and gatherers irrespective of
their prior contacts with the European encroachment.  By the time of the Lewis
and Clark expedition, huge portions of  the Native American   population had
already been substantially decimated by disease such as small pox.  Which tribes
were they describing?   Rick