We don't have enough studies or evidence, but we do have our subjective physical experience. And that pretty much tells us what is healthy or not for the most p

We don't have enough studies or evidence, but we do have our subjective physical experience. And that pretty much tells us what is healthy or not for the most part. Our back aches when we sit for too long. We feel depressed when we doomscroll and sit inside. We feel like shit after eating processed food. We can sense that plastic isn't great. We know noise over long periods of time drives people crazy. We feel the rush and crash of our glycemic index. It's like when we pretend that our ancestors had no idea smoking was bad. They weren't stupid and could instantly deduce that inhaling smoke was not great for you. Later on, we got a more precise idea and probably the same will happen with our current problems. In the intervening time, however, we can pretty much deduce what is wrong other than the more diffuse threats such as lead or radon.