A paleo diet is a dietary plan based on foods similar to what might have been eaten during the Paleolithic era, which dates from approximately 2.5 million to 10,000 years ago.

The Paleo Diet — also known as the Stone Age, Caveman or Ancient Diet — is a modern attempt to replicate the diet of humans of the Paleolithic age. These ancient hunter-gatherers lived before the advent of agriculture and subsisted on lean proteins (like fish, venison and poultry), eggs, fruits, vegetables, nuts and roots.