cancer causing chemicals in tobacco Smoking and Smoking tobacco is hazardous to

Given this evidence for current smokers, the evaluation of the appropriate dose should also be considered for patients exposed to environmental tobacco smoke [42]

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[83] In smokers, COHb levels are 5% on average and may reach as much as 10% in heavy smokers

He said that enforcement would fall to federal agencies like the Food and Drug Administration or the Bureau of Alcohol, Tobacco, Firearms and Explosives, and the likelihood of them being willing or able to spend resources to enforce the change nationwide would be low