The "paleolithic," "stone age," "cave man," or perhaps "neanderthal" diet programs have been around for a while and there are a number of books that have been composed on the subject.
Usually, with a only few minor constructive criticisms, I guess they are directly on point, and often will benefit the health of yours and definitely your weight loss efforts.

www.GeeksOnForce.com in brooklyn (C) fotki.com" style="max-width:400px;float:left;padding:10px 10px 10px 0px;border:0px;">A "Paleo Diet" or perhaps "cave man" diet is in fact really similar to the bodybuilding diet programs I often suggest and this is most likely a great option get extremely lean, very rapidly.
On physique competition diets (bodybuilding, fitness, figure, etc), you leave the lean proteins, lean meats, nuts and seeds, the green veggies (fibrous carbs), and some fruit in the diet, while lowering or even getting rid of ALL refined food and Several of the cereals as well as starches. (usually the milk products go too).
When it comes to optimum fat loss, the removal or reduction of grains and calorie dense starchy carbs in favor of lean protein & vegetables will definitely help speed the fat loss process - even if that is simply as it lowers caloric density of the food intake, nonetheless, there are various other factors.
Lean protein (meat and fish) + fats which are good & nuts + lots of green vegetables + some fruit = a lean body!
And that's essentially what the "paleolithic" diets suggest, because the concept there is to eat like the "stone age" ancestors of ours did - exipure before and after, click to find out more, there is McDonalds, Other junk and coca Cola food.
The concept is that since our genetic code (the human genome) has changed lower than 0.02 percent in 40,000 years, this implies that the bodies of ours remain wanting to obtain the same food and nutrients they were getting 40,000 years ago.