Marijuana deposits 4 times more tar in lungs than tobacco cigarettes

When equal amounts of marijuana and tobacco are smoked, marijuana deposits four times as much tar into the lungs. This is because marijuana joints are unfiltered and often more deeply inhaled than cigarettes.

Like tobacco smoke, marijuana smoke contains cancer-causing chemicals.  There are 33 cancer-causing chemicals in marijuana.

For a long time THC levels averaged 2.3 percent in marijuana. Today, average THC levels are higher than 8 percent and can go up to 35 percent in medical marijuana.

Not judging; just informing.

For more information from the American Lung Association, click on http://www.lung.org/associations/states/colorado/tobacco/marijuana.html