On Sunday, May 30, 2021 at 3:45:16 AM UTC-10, Opinicus wrote:
> A pet peeve of mine is growers, manufacturers, advertisers, and
> friends and acquaintances pushing things on me because they're
> "natural". The first three groups I ignore; to the friends and
> acquaintances I relate the story of a doctor treating a patient who's
> suffering from lung disease but who insists on smoking weed. "The
> habit is making your condition worse" the doctor admonishes him. "How
> can that be?" the patient asks. "It's all natural. How can it be bad?"
> "Apricot stones naturally contain lethal amounts of cyanide. Eat too
> many and they'll kill you" the doctor replies. "In my back yard
> there's a plant that, if you sit under it for about ten minutes or so,
> you'll die. Just because something is ""natural" doesn't mean it's
> safe or good for you." The patient seems to accept this and says he'll
> quit and leaves. After he's gone, the nurse in attendance looks at the
> doctor and asks "What plant will kill you if you sit under it for ten
> minutes?" "A water lily, of course."
> --
> Bob
> Sidera errantia quibus procella tenebrarum in aeternum servata est

My father-in-law was hospitalized when he OD'ed on the most natural of substances - water. He had read a book that claimed that drinking a lot of water could cure all ills. My guess is that it was a psychiatric problem, mostly. As it goes, water poisoning is a real thing.
My dentist was recommending that I drink more water. He rattled off some ridiculous number of glasses of water that I should drink every day. I think he might be trying to poison me.

https://en.wikipedia.org/wiki/Water_intoxication