The Paleolithic diet, Paleo diet, caveman diet, or stone-age diet is a modern fad diet consisting of foods thought to mirror those eaten during the Paleolithic era.
There are different variants of the diet; some are predominantly plant-based but the most recent popular variants focus on animal products. The diet avoids processed food and typically includes vegetables, fruits, nuts, roots, and meat and excludes dairy products, grains, sugar, legumes, processed oils, salt, alcohol, and coffee.