Approximately five to seven million years ago, human ancestors stood upright for the first time and may have consumed carbohydrate-rich underground storage organs, roots, corms, and tubers in addition to fruits, plants, and insects.

“somewhere between five and seven million years ago our ancestors we stood upright for the first time um and we also there's some suggestion that in addition to limited amounts of wild fruits and wild plants and a bunch of insects they may have been targeting some underground storage organs some some carbohydrate-rich uh roots quorums and tubers uh we don't know that for sure but a lot of people are suggesting that”