Love your comment, Sharonimo. I think the most important thing to take away from Weston A. Price is what he did here, in the US, with kids growing up with horrendous diets that make the SAD look good (eating things like white bread with margarine and jam for meals). He would feed them one meal a day with fresh bread baked from freshly-ground whole wheat flour, a supplement of cod liver oil and butter oil, OJ, raw milk, something like a stew with beef, marrow bones and veggies, and some cooked fruit for dessert. For the other two meals/day the kids ate their regular crappy food with their families. On this, the kids’ health completely turned around and they thrived.
To me, this means that there is definitely some leeway. You don’t need a “perfect” WAPF diet to be healthy. Just try to eat a fairly nutritious diet and you will probably be fine. Sure, incorporate raw milk, CLO, organ meats. But it’s fine to include some processed stuff, too, or whatever you grew up with.
The other thing that Weston A. Price showed is important is soil quality, and that is tough today. Probably if you can get local stuff from a small, well-managed farm, it would be ideal, but otherwise I bet our diets are still better than what people were getting back in the ’20s.