It is the dose. Ionising radiation breaks DNA that won't make your cells stronger, it'll make them dead.
Boiling, baking, fermenting can detoxify some poisons from some plants, but we appear to be able to survive for 120 years, so what's limiting that by 40 years since we invented agriculture?
Have you seen the video about the carnivore since teenage woman running a cattle farm? She moves and looks like a healthy person in her 40s, but she was 82 when the video was made. I'll edit this with a link when I find the video
Not the one I was thinking of but https://youtu.be/kxMLto084Pc Not this one either https://youtu.be/mnWdsEzx8F0 but probably the same person
@silly_goose@lemmy.today updated with some links. I couldn't find the exact one I was looking for