Munro Heather M, Tarone Robert E, Wang Thomas J, Blot William J
From International Epidemiology Institute, Rockville, MD (H.M.M., R.E.T., W.J.B.); and Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (T.J.W., W.J.B.).
Circulation. 2016 May 10;133(19):1861-6. doi: 10.1161/CIRCULATIONAHA.115.020536. Epub 2016 Mar 28.
In contrast to whites, black smokers prefer menthol cigarettes over nonmenthol cigarettes by a large margin and tend to have higher mortality from several smoking-related diseases than whites, raising the possibility that menthol cigarettes contribute to racial disparities in risk. Evidence for differential associations between menthol and nonmenthol cigarettes indicates lower cancer risk for menthol smokers, but for cardiovascular disease (CVD) mortality, evidence has been inconsistent.
Cox proportional hazards models were used to compute hazard ratios and accompanying 95% confidence intervals for all-cause and CVD mortality for menthol compared with nonmenthol cigarette smokers among 65 600 participants in the Southern Community Cohort Study, an ongoing community-based cohort with the largest number of menthol smokers being traced. Among the 27 619 current cigarette smokers, 4224 died during follow-up, with 1130 deaths attributed to CVD. Both all-cause (hazard ratio=0.93; 95% confidence interval=0.86-1.01; P=0.10) and CVD (hazard ratio=0.88; 95% confidence interval=0.76-1.03; P=0.10) mortality risks were similar in menthol compared with nonmenthol cigarette smokers.
Smoking regardless of cigarette type is hazardous to health, but these results do not indicate that menthol cigarettes are associated with greater CVD risks than nonmenthol cigarettes.
与白人吸烟者相比,黑人吸烟者更倾向于薄荷醇香烟而非非薄荷醇香烟,并且因多种吸烟相关疾病导致的死亡率往往高于白人,这增加了薄荷醇香烟导致风险种族差异的可能性。薄荷醇香烟与非薄荷醇香烟之间存在差异关联的证据表明,薄荷醇吸烟者患癌症的风险较低,但对于心血管疾病(CVD)死亡率,证据并不一致。
在南方社区队列研究的65600名参与者中,使用Cox比例风险模型计算薄荷醇香烟吸烟者与非薄荷醇香烟吸烟者全因死亡率和CVD死亡率的风险比及相应的95%置信区间。这是一项正在进行的基于社区的队列研究,追踪的薄荷醇吸烟者数量最多。在27619名当前吸烟者中,4224人在随访期间死亡,其中1130人死于CVD。与非薄荷醇香烟吸烟者相比,薄荷醇香烟吸烟者的全因死亡率(风险比=0.93;95%置信区间=0.86 - 1.01;P = 0.10)和CVD死亡率(风险比=0.88;95%置信区间=0.76 - 1.03;P = 0.10)风险相似。
无论香烟类型如何,吸烟都对健康有害,但这些结果并未表明薄荷醇香烟比非薄荷醇香烟具有更高的CVD风险。