I’m really rather conservative when it comes to food. Here are my basic principles:
Food is edible; industrial byproducts are not.
Remember how crisco was invented? That should have been a clue to the fact that it isn’t food.
Food comes from farms, not from factories.
So, it should be obvious, but Confined Animal Feeding Operations (CAFOs) are not farms. They are factories. The meat they produce may look like meat, but it’s not food. (Sneaky, I know.)
If your (or someone else’s) great-great-great-grandmother wouldn’t recognize it as food, it probably isn’t.
This is a good way to avoid industrial “food.” (What would the grandmothers have thought of those all-vegetable “chicken nuggets”? Probably not much.)
Best to respect food traditions.
Humans are mammals, and we evolve with our food. We don’t develop food traditions in a vacuum. Remember the tragedy of pellagra? That happened because our ancestors depended on the native food (corn) without the native tradition (nixtamalization).