> But what we've discovered is classes of chemicals that cause more damage at small doses That's fascinating. Would you please give an example of a chemical wh

> But what we've discovered is classes of chemicals that cause more damage at small doses That's fascinating. Would you please give an example of a chemical whose toxicity decreases with increased dosage? > In the full quote it's clear we aren't talking about pesticides or arsenic. "All things" makes it pretty clear what we're talking about. I feel comfortable asserting that both pesticides and arsenic are members of the set of all things, along with vitamins, iron, and perchlorates. I think one might go so far as to say that an organism can be poisoned by any substance its body is capable of absorbing in sufficient quantity. Water poisoning is a fun example. Despite our bodies largely being composed of it, ingest too much and your cells swell up to the point it can cause brain failure. Even the non-reactive noble gasses can cause narcotic effects.