I generally agree that the statement "unlimited foods" is misleading.  What
the authors of some of the low carb books are counting on is that people
seriously overweight often binge on carbs, and are less likely to binge on
higherfat foods (not used to it, or feel fuller sooner, less insulin
response, etc).  They hope they will be naturally fuller, and eat less. I
think the Eades, tho and Atkins too are clearer lately that calories must be
taken into consideratin.  What is interesting to me has been my personal
experience, though; that calorie deprivation alone is not the total answer.
I have been consuming as many or more calories on a paleo diet than before,
and I have lost weight!  True, i didn't have much to lose (15 lbs,) so that
may be part of it.  Anyone have a possible explanation?