> is obviously going to be an acute response of some sort? That's not how science works. They don't just act on something because someone thinks "it's obvious"

> is obviously going to be an acute response of some sort? That's not how science works. They don't just act on something because someone thinks "it's obvious". They need hard evidence because the body is very complex and requires specific experiments to show anything. It's not about what get who suprised or not surprised, this is about establishing a definitive scientific truth. And there can absolutely be a substance that you introduce into the body and there is no meaningful effect. (You can probably always measure some effect, but it could be so small that it doesn't affect anything of value.) (no downvote from me fyi)