as belonging to primates were evolved.
             Most primates species either maximize the efficiency of their digestive track or maximize the quality and the volume of food processed in a day. Also. Those species, which increase the volume of food, consumed also tended to have larger brains because of a need to remember, not only what, but also where good food sources are and when they are in season.
             Knowing the trends of evolution, the next thing to do is to look at how it relates to humans. It can be seen that out closest living relative, the chimpanzee makes up 94% of his diet with plants. Most of this is fruit with high sugar and fiber content, meaning that chimps take in hundreds of grams of fiber per day; contrary to the 10 grams or less the advantage American consumes. This suggests that our diet should be higher in vitamin C, pectin, and fiber like our relatives in the wild. Ironically, the same natural selection, which favors the most energy-dense and low fiber diets, may now be causing us to suffer from too little fiber.
             Plants have been a major food eaten by primates. The primates were almost exclusively herbivorous. A strong focus on plant foods is characteristic of all primates-- and there
             ...