This review, published in the American Journal of Preventive Medicine in 2014, looked at 76 of the best available studies on e-cigarettes: "Due to many methodological problems, severe conflicts of interest, the relatively few and often small studies, the inconsistencies and contradictions in results, and the lack of long-term follow-up no firm conclusions can be drawn on the safety of [e-cigarettes]." The researchers also found that in 26 of the studies reviewed, the authors had declared a conflict of interest
The severity of alcohol dependence questionnaire: Its use, reliability and validity
Biden did not follow through on a plan to ban menthol-flavored cigarettes
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Many Canadians see it as a personal choice, while others argue for stricter legal restrictions