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CMAA报道 | 酒到底是抗癌还是致癌?科学研究来说话!

导语
据大通福克斯美国会诊中心(CMAA)了解:2017年,美国临床肿瘤学会(ASCO)公布数据指出,在众多肿瘤中,酒精是一个已知的风险因素!最新相关资讯信息,大通福克斯美国会诊中心(CMAA)将持续为您报道。




但是,人们可以通过减少饮酒降低这种风险。这项研究结果与国际癌症研究组织发表的“酒精可归为致癌因子”的研究结果一致。

对572项研究进行了荟萃分析发现,相比控制饮酒或不喝酒的人来说,大量饮酒的人会增加口咽癌、食管癌、结肠癌、喉癌、乳腺癌的患病风险。

此外研究还指出,酒精摄取对胃癌、肝癌、胆囊癌、前列腺癌、肺癌、黑色素癌和胰腺癌的风险有关。

其他的研究显示,癌症患者如果饮酒会大大增加癌症的死亡率。

饮酒与癌症风险之间的关系的结果基于流行病学的研究。美国临床肿瘤学会(ASCO)指出,剂量反应关系是其中的关键。

饮酒增加风险的癌症
乳腺癌
对26项对照组试验和队列试验进行荟萃分析显示,21,149名乳腺癌患者以剂量依赖型的方式进行酒精摄取,会增加乳腺癌的风险。

大量饮酒和少量饮酒的总体相对风险为1.36 (95% CI, 1.20-1.54; P < .001)。研究表明,每1克的酒精摄取会增加0.59%的乳腺癌风险。

但是在患者诊断出乳腺癌后,饮酒并不会增加乳腺癌复发或对总体生存率产生影响。只有每日饮酒量超过20克才会增加乳腺癌的死亡率。

结直肠癌
对30个结直肠腺瘤研究的荟萃分析表明,每日摄取25克的酒精会增加27%的腺瘤风险(RR, 1.27; 95% CI, 1.17-1.37).另一项荟萃分析表明每日饮酒50克或100克会增加腺瘤的患病风险。这项结果与前一个荟萃分析的基本相同。

另一项研究结果表明,啤酒也会显著提升结直肠癌的患病风险(CRC; summary RR, 1.20; 95% CI, 1.06-1.37),特别是每天喝至少两瓶啤酒的人更是如此。(summary RR, 1.37; 95% CI, 1.26-1.4).大量饮用啤酒会增加男性结直肠癌的风险,而在女性身上尚未发现。

食管癌
4项研究的合并数据显示,每日饮酒的人会增加食管鳞癌的风险(odds ratio, 2.34; 95% CI, 1.22-3.45)。饮酒和吸烟会发挥相互协同作用,共同对食管癌产生影响,研究预测,吸烟和饮酒会增加3.28%食管鳞癌的风险(95% CI, 2.11-508)。

研究同时指出,患者在未诊断前饮酒会增加食管鳞癌的死亡率。

胰腺癌
大量饮酒能够显著增加胰腺癌的患病风险(RR, 1.15; 95% CI, 1.06-1.25),特别对于那些嗜酒者来说更是如此(RR, 1.43; 95% CI, 1.17-1.74)。

另一项荟萃分析发现,虽然大量饮酒会增加胰腺癌的患病风险,但是人们完全可以通过减少酒精摄取来降低这种风险因素。

其他肿瘤
流行病学的多个荟萃分析表明,饮酒,特别是大量的饮酒,会增加胃癌、头颈部鳞癌、肝癌、上呼吸道癌和黑色素瘤的患病风险。母亲在怀孕期间饮酒与儿童急性髓性白血病有关。

尽管这项研究并没有发现饮酒和前列腺癌之间存在相关性,但是近期的多个研究表明,相比戒酒或不喝酒的人士,饮酒与前列腺癌存在剂量依赖型的相关性,也就是说,饮酒的剂量与前列腺癌患病的风险成正比。

饮酒与癌症具有明显的相关性,大量饮酒(P < .001)与前列腺癌的相对关系为1.18。此外在前列腺癌的发病率和死亡率方面也存在相似的结果。

无影响的癌症
荟萃分析发现,以下饮酒与以下癌症无明显相关性:膀胱癌、脑瘤、肝外胆管癌、子宫内膜癌、肺癌、卵巢癌、子宫肌瘤、神经胶质瘤、白血病。

保护效应
多个荟萃分析指出饮酒会对一些类型的癌症,特别是一些血液恶性肿瘤和肾细胞癌产生保护效应。

霍奇金淋巴瘤
对10个研究项目的荟萃分析显示,酒精摄取会降低霍奇金淋巴瘤的患病风险(RR, 0.70; 95% CI, 0.60-0.81),其中二者的关系为剂量依赖型关系,少量饮酒的相对相关性为0.71(RR, 0.71; 95% CI, 0.57-0.89),中等到大量饮酒的相对相关性为0.73(RR, 0.73; 95% CI, 0.60-0.87)

多发性骨髓瘤
尽管一项荟萃分析显示饮酒会增加多发性骨髓瘤的患病风险,但另一项分析表明,曾经有饮酒史的人会减低多发性骨髓瘤的风险(RR, 0.88; 95% CI, 0.79-0.99)。

对于女性来说,其相对相关性为0.79 (RR, 0.79; 95% CI, 0.69-0.89),酒类中红酒的相对相关性为0.77 RR, 0.77; 95% CI, 0.67-0.89)

肾细胞癌
三个荟萃分析指出,酒精摄取能够降低肾细胞癌。男性和女性每日摄入5克对肾细胞癌的降低率分别为5%和9%。

甲状腺癌
五份对1003名甲状腺癌患者的合并数据显示,每周超过七次饮酒会降低甲状腺癌的发病率(hazard ratio, 0.72; 95% CI, 0.58-0.90),尤其能够降低甲状腺乳头状瘤的发病率。

研究总结
不同种类的酒对不同类型的癌症影响有所不同。但是,研究并没有说明酒精摄取对癌症有预防作用。

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