White vinegar is a weak acid. Acid’s are great at killing things, corroding things, and dissolving things…things that *aren’t* vulnerable to acids.
Human stomachs are *very* acid resistant…they’re full of stomach acid anyway. Vinegar really doesn’t bother them at all. And we naturally have ways of neutralizing stomach acid before it heads to other parts of our bodies, and those methods work just as well on other acids, like vinegar.
If you stick vinegar in part of a human that *isn’t* acid resistant, bad things happen.
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