When I first became interested in this WOE I went in search of the "other side of the story" to try and reach an objective decision.

I found the following site to be very helpful in giving a scientific analysis of the various low carb diets and it also appears to have an objective point of view:

http://www.theidealdiet.com/index.html

The author is an MD who gradually became convinced that a moderately low-carb diet is the healthiest over all. I also have the book and she does a newsletter as well -- all are very helpful on the medical issues.

As far as all the paleolithic people dying at middle age - I believe the Eadeses address this question in their books -- definitely worth reading to answer your health questions!!