Nietzsche's Toxicology

CETS writes "If it doesn't kill ya' it makes you stronger, so a little bit of a bad thing might be alright, according to Scientific American which has this article. " If dioxin and ionizing radiation cause cancer, then it stands to reason that less exposure to them should improve public health. If mercury, lead and PCBs impair intellectual development, then less should be more. But a growing body of data suggests that environmental contaminants may not always be poisonous--they may actually be good for you at low levels.""