一项新的研究显示,早晨睡醒后立刻吸一支烟,会增加患肺癌及口腔癌的风险。即使要吸烟,最好等起床半小时之后再吸。发表在最近出版的美国《癌症流行病学、生物标志和预防》期刊上的这项研究称,NNAL,是烟草特有致癌原亚硝胺(NNK)的代谢产物,此前已有研究发现,亚硝胺可在一些啮齿动物的肺部诱发肿瘤,因此血液中的NNAL水平 A new study shows that smoking a cigarette immediately after waking up in the morning increases the risk of lung cancer and oral cancer. Even if you want to smoke, it is best to wait for half an hour to wake up and then sucked. The study, published in a recent issue of the journal Cancer Epidemiology, Biomarkers and Prevention, claims that NNAL, a metabolite of the tobacco-specific oncogenic nitrosaminergic (NNK), has been previously found to Amines can induce tumors in the lungs of some rodents, and therefore levels of NNAL in the blood