James R. Webster Jr., MD
To the Editors: The article by Sheps and coworkers (1) and the accompanying editorial by Waiden and Gottlieb (2) are of interest and raise several questions for possible scientific study. I believe, however, that both papers emphasized the wrong risk factors for carbon monoxide exposure. Rather than focusing on urban life or occupational issues, they should have identified cigarette smoking as the major problem. Smokers are more numerous (75 million in the United States) and have higher carbon monoxide levels and longer exposure times than persons at risk because of occupation (for example, traffic police and tunnel workers). This does
Webster JR. Cigarette Smoking, Not Carbon Monoxide, Is the Problem. Ann Intern Med. ;113:900. doi: 10.7326/0003-4819-113-11-900_1
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Published: Ann Intern Med. 1990;113(11):900.
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