我们现在是否完全处于致癌因素包围之中,事实上还不具有多少证据。据一项较精确的研究表明引起人类癌变的有六种危险因素和一种可疑因素,应予注意。值得庆幸的是,这些存在我们周围的致癌因素很大程度上是能被人类自己所控制。一。烟草:来自人类和动物的研究资料已证实烟草致癌的影响。有统计资料表明,45岁至64岁具有规律吸烟史者可增加肺癌危险度8倍,喉癌为6倍,食管癌为4倍,胰腺癌为3倍,膀胱癌为2倍。这不包括吸烟所致的严重心、肺疾患。因此,建议未吸烟者就不要染上嗜好,已吸烟者要尽快戒掉。二、酒精:没有资料表明饮酒可直接引起动物或人 Whether we are completely surrounded by cancer-causing factors, in fact, does not have much evidence. According to a more accurate study shows that there are six risk factors for human carcinogenesis and a suspicious factor, it should be noted. Thankfully, these carcinogenic factors around us are to a large extent controlled by humans themselves. one. Tobacco: Research from humans and animals has confirmed the carcinogenic effects of tobacco. Statistics show that 45 to 64 years old with regular smoking can increase the risk of lung cancer 8 times, 6 times laryngeal cancer, esophageal cancer 4 times, 3 times for pancreatic cancer, 2 times for bladder cancer. This does not include the serious heart and lung problems caused by smoking. Therefore, it is recommended that non-smokers do not play a hobby, smokers have to quit as soon as possible. Second, alcohol: There is no indication that drinking can directly cause animals or people