The original diet of humans was only raw food, before the discovery of fire and unnatural processing. A raw food diet is more powerful than most medicines, since natural nutrition is full of powerful nutrients and free of chemical additives or preservatives.

The Caveman diet is a version of the raw food diet, named for ancient humans in extreme conditions, who consumed raw food of their local environment. Grains were not part of their diet and today, they are still not part of a raw food diet. Meat, eggs, vegetables, nuts, seeds, beneficial oils and limited fruits or berries are included.