why are cigarettes legal but not weed There Risks From Secondhand Marijuana Smoke? Early Science Says Yes – Houston Public Media Classification of patterns of tobacco

Thomson B, Tapia-Conyer R, Lacey B, Lewington S, Ramirez-Reyes R, et al

Figure 1.7 Neurons communicate at the synapse

While this may feel calming or pleasing at the moment, the effects wear off quickly, meaning that a person may feel the urge to consume more nicotine and maintain the good feelings

Albert Rizzo, lung doctor and chief medical officer of the American Lung Association, We dont know the long-term effects of marijuana as we do for the long-term effects of tobacco." Researchers from Ottawa Hospital General in Canada compared approximately 150 lung scans from marijuana smokers, tobacco-only smokers and nonsmokers

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