Comment: Formaldehyde

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Formaldehyde

Methanol converts to formaldehyde, yes. However, the body recognizes that formaldehyde is very toxic.

Formaldehyde is thus very efficiently metabolized to formic acid in the body. It does not bioaccumulate. I don't know if it can cross the blood-brain barrier, but so can many other small molecules. You'll get a far bigger dose of formaldehyde by smoking a cigarette than ingesting a soda's worth of aspartame.

Formic acid is the same substance many insects use in their stings. It also does not bioaccumulate.