Is "Trader Joe' here the supermarket? Let us think back to a time before food delivery apps and diet gurus, when “Trader Joe”was the guy guarding the only salt lick in a hundred-mile radius and “biohacking” was something you did to a fresh kill with a sharpened stone. Government diet recommendations (or governments, for that matter) wouldn’t arrive on the scene for millennia, so you’d have to make do, as your ancestors did, with intuition and availability. As a forager, your diet would consist of a diverse array of land animals, fish, vegetables, and wild fruits. The chief calorie contributor would by and large be fat, followed by protein. 1 You might consume a limited amount of starch, in the form of fiber-rich tubers, nuts, and seeds, but concentrated sources of digestible carbohydrate were highly limited, if you had access to them at all.