Specifically, the This teacher survived the 2018 2019 school year shirt, naphthalene and toluene have been found in cannabis smoke. Benzene is formed during the natural processes of combustion and can be damaging to the reproductive system when inhaled in large quantities. Naphthalene is a potential carcinogen, and research on it is lacking. In high concentrations, it’s been shown to destroy red blood cells, and in one severe case was shown to cause organ damage. Toluene is a benzene derivative, though thankfully far less toxic. Overexposure to this compound has been shown to have negative effects on the central nervous system, as well as symptoms of headaches, nausea, fatigue, sleepiness, and irritation of the eyes and upper respiratory tract.
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An important reminder is that traditional smoking of This teacher survived the 2018 2019 school year shirt of the above issues; those studies were done under specific circumstances involving unrealistically large amounts of the carcinogens, much more than would be produced in traditional smoking, even when taken to the extreme. Comprehensive and extensive research has been conducted on tobacco smoke, linking it to an array of lung and other issues, most drastically lung cancer. In contrast, much fewer studies have been conducted on the risks of cannabis smoke as the plant remains a Schedule I controlled substance. Despite this lack of research, studies conducted thus far have found no link between cannabis smoking and lung cancer.