Here's one study that shows vaporization reduces the amount of toxins released versus regular combustion: http://www.cannabis-med.org/data/pdf/2001-03-04-9.pdf

Here's one study that shows vaporization reduces the amount of toxins released versus regular combustion: http://www.cannabis-med.org/data/pdf/2001-03-04-9.pdf http://www.cannabis-med.org/data/pdf/2001-03-04-9.pdf