[itsameta4]

This is all extremely debunked. The "Dr. Mews" quoted in the article lost his license to practice in the UK, largely on the basis of these claims.

[tsomctl]

Maybe the attractiveness part is debunked, but I used to be a mouth breathing. Since forcing myself to breath through my nose, I've noticed that seasonal allergies don't affect me any more, and the health of my tongue and gums has improved.