> http://news.bbc.co.uk/2/hi/health/7226969.stm
>
> "Overall, 29%% of the sample showed some signs of gum disease."
>
> Fewer than 1 in 3?
>
> "Lead researcher Professor Murray Thomson, of the University of Otago,
> said the effect was unlikely to be due to the direct impact of smoke on
> the gums as it was inhaled.
>
> Instead, it was likely that toxins in the cannabis were absorbed into
> the bloodstream via the lungs, and then affected the body's ability to
> heal inflammation in the gums caused by the build up of bacteria on the
> teeth."
>
> Of course, no mention of what the toxins are...
>
> He said: "The problem is not the smoke itself - it's what is in the smoke.
> ...