The pros and cons of oil pulling

I’m not quite sure how the world got so polarised that oil pulling has already become more or less passé within the online community.  Yet whenever I mention it in real-life I get a ‘Huh??’  Followed, when I explain it, by a look that rapidly turns into mild suspicion, and finally backing away.  Indeed my dentist all but fell about laughing when I mentioned it, so bang go my hopes of being taken seriously as a human being there again.