Someone suggested I look at this, but it was worth no more than a 15 minute skim. One interesting principal is that people eat the same weight of food per day so that you should generally eat foods high in water (ie fruits and vegetables). While the principal is new, the underlying thought is not revolutionary in the diet world. I mostly picked it up b/c my neighbors and are in a weight loss contest with our husband, but we are smoking them anyway, even without the Volumetrics.
The most humorous part of the book is the cover and back flap shots which show, respectively, a HUGE bowl of soup in close up and a distant pic of 1/6 of a cheeseburger which looks to be about the size of two noodles; and a HUGE bowl of fruit in close up and a distant pic of a muffin which looks to be the size of one strawberry. I've never really even seen muffins that small.