Researchers at Northwestern University and Massachusetts General Hospital used MRIs to compare the brains of 20 young adults who reported smoking pot at least once a week and 20 controls who had used marijuana no more than five times in their lives and had not consumed it at all in the previous year
Other tobacco Increased interest in vaping appears to have cut into interest in hookah pipes
McKenna, T.: Food of the Gods The Search for the Original Tree of Knowledge A Radical History of Plants, Drugs, and Human Evolution , Bantam Books, 1993, p
History of Tobacco
Adverse Health Effects of Passive Smoking: Passive Smoking, Lung Function and Plasma Cytokines among School Pupils [Merghani, Tarig, Saeed, Amal] on Amazon.com
And some hotels had put monitors outside so you could watch TV and smoke, and they just went down quietly