can one puff of a cigarette harm you Puffing: What Does It Mean and What Are the Risks? That one puff? Here’s what

"Epidemiology of Chronic Diseases"

Frank Bandiera, a researcher with the University of Texas Health Science Center in Houston who was not involved in the study, liked that the researchers controlled for parents mental health in the new study because that could be a confounder. But, he added, the study might be limited because, although the questionnaires are thought to be valid, the mental disorders were not actually diagnosed by physicians

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As a result, e-cigarettes are believed by many to be less harmful than cigarette smoking