shrox wrote:
Our ancestors did not eat a "balanced diet", they ate what they could catch or find, so you might have meat for a few days, then berries for a week, apples for another week if the season is right, the remains of a carcass for a few more days, then a week with nothing.
But a hamburger without cheese and a bun? WTF?!
The point of a paleo diet is not to literally re-create what our ancestors ate. This is impossible since many of the animals and plants no longer exist or have been bred unrecognizably far from what they were 10,000 years ago. It would also be undesirable because, as you point out, the diet would necessarily rely heavily on a few types of food as were immediately available. Most people doing a paleo diet, myself included, have a diet that would have been geographically impossible in the past because it features foods that are grown or killed thousands of miles apart.
But all that doesn't matter. The point of a paleo diet is not to literally live like them, but rather to get
away from the modern things that are wrecking our health and eat foods that we evolved to handle. It doesn't matter that no actual paleolithic human could have oysters one day and bison burgers the next. That was geographically impossible. However, a modern human's digestive system can handle both foods quite well since our digestive systems are identical to both the ancient oyster eater and the ancient bison eater. And that's the point. Paleo eating is all about sticking to what our digestive systems have evolved to handle.
If the hamburger came from a cow that spent its' life eating grass instead of antibiotics and corn (or if it came from a bison! My grocery store sells that now), then there is nothing WTF about it. We are evolved to eat it.