MAPS, in conjunction with the California branch of the National Organization to Reform Marijuana Laws, worked between 1993 and 2009 to sponsor research into the effects of vaporizers and water-pipes in filtering the fumes of inhaled marijuana. Our goal was to determine if water-pipes or vaporizers could reduce the health risks of smoking marijuana.
From 1993 to 2002, we sponsored research at DEA-licensed laboratories testing the content of combusted and vaporized marijuana for cannabinoid particulate and carbon monoxide levels.
Between June 2003 and August 2009, MAPS attempted to purchase marijuana from the National Institute on Drug Abuse for more research with vaporized marijuana. Due to excessive delays and frustration, in August 2009, the laboratory we were working with on the project withdrew its efforts.
MAPS is no longer working on specific vaporizer research, although our protocol for our marijuana/PTSD research requires some subjects to use a vaporizer and others to smoke marijuana.