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The first of these is an important neurotransmitter known as acetylcholine (ACh)

HVAC System Contamination: Smoke and soot often circulate through your heating and cooling ducts, spreading contaminants throughout your home

It wouldnt have been like they were smoking a new New York Times

Its the combustion thats the problem, so this idea that because cannabis is natural burning and inhaling it is fine is just wrong. While many longitudinal studies on the health impact of inhaling marijuana are still under way, there are plenty of toxins and tar in cannabis smoke that can hurt the lungs, said Carol Boyd, founding director of the Center for the Study of Drugs, Alcohol, Smoking and Health at the University of Michigan in Ann Arbor

A relationship that I thought was a true relationship