"But looking back significantly further than that", says the GP. Our bodies are mostly what they are based on thousands of years ago (or more), not hundreds. In

"But looking back significantly further than that", says the GP. Our bodies are mostly what they are based on thousands of years ago (or more), not hundreds. In other words, the 1900s are irrelevant. It cost a lot of time/energy to hunt, for sure. But that's basically all they did. And reading descriptions of say, the Americas before European colonisation, meat was plenty despite industrial breeding, or any breeding at all.