Hmm - this is a fast and light read with an amusing premise that mostly avoids a didactic undretone. Cat is a junior in HS in advance clases, including a specoial science class that requires every student to do independent research on a topic related to a random NatGeo photo pulled from a stack on the first day of class. Cat gets a picture of early hominids and decides to research cave man diets. meanwhile, the usual angst of HS is having its effect on her. She is in class with her best freind Amanda, her childhood best friend Matt, and a few others - oh, and she is fat. The story chronicles her weight loss as she drastically changes her diet to whole and natural foods (as closely resembling hominid diet as possible) and eschews modern technology, forgoing TV, computer, cell phone and cars as much as possible. The story is somewhat predictable, but unusual in perspective. It sits on this year's TX L:one Star List for 6-8th grades - I think it might be more for 8th grade for the few make-out scenes, but the food discussions are interesting, even if thinly disguides didacticism within a light romance plit.