癌症的传染与预防

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　　关键词：癌症 传染 预防
　　
　　前言
　　癌症会传染吗？癌症可以预防吗？
　　1、 癌症的发病――是受外界因素、创伤所导致人体自身细胞的变异，所产生的一种细胞性疾病。它的特性是吸收人体的营养物质使人衰竭而死亡。
　　2、 微生物（细菌）是人体的外来的生物入侵，它的特性就是产生毒素，使人中毒而死，因此癌症是不会传染的。而微生物（细菌、病毒）是会传染的。
　　3、 癌症为什么不会传染
　　因为癌症是受外界因素、创伤所导致的人体细胞的变异，是一种自身性细胞性疾病。它与微生物（细菌、病毒）无论在发病原因，病源的本身都有本质的不同。因此癌症是不会传染的。它只会在人的身上无休止的生长，分裂（分化），吸收人体的营养物质，使人衰竭而死。
　　4、 癌症的预防
　　癌症与艾滋病完全不一样，癌症的诱发因素太多、太多！很多诱因又与日常生活密切相关！预防的难度相当的大，几乎是没有办法预防的。艾滋病的诱因主要为三条：一是血液传播，二是性传播，三是母婴传播。而母婴传播又为血液传播和性传播感染者继发传播而来。实际传播源为血液传播和性传播（母婴传播）两条。它的预防只要控制住非法采血、吸毒、不洁性接触就完全可以预防了。因此，艾滋病是完全可以预防的疾病，并且预防的成本很低，很方便，很有效。而癌症几乎是没有办法预防的，关键还是要在治疗上取得突破。
　　5、 讨论
　　癌症为什么不会传染而又无法预防呢？
　　因为癌症是受到外界因素的创伤所导致的人体细胞变异的一种细胞性疾病。因此它不具有传染性。因为癌细胞的发病诱发因素太多！太多！很多诱发因素又与人们日常生活密切相关，如烟、粉尘、射线、日晒、饮水、饮食中的某些有毒、有害物质等等。上述物质的预防难度是相当大的，预防难度大！收效小！基本是没有办法预防的，所以说癌症是一种没有办法预防的疾病，关键还是要在治疗上取得突破。
　　
　　The Infection and Prevention of Cancer
　　Authors:
　　1. Fan Zhihua, Hangzhou Fan Zhihua Medical Technology Development Co. Ltd, 310012
　　2. Chen Shaoyan, Hangzhou Qianjiang Hospital
　　3. Xu Jianbin, Department of Pathology Research, Fuzhou Medical College of Nanchang University
　　4. Zhao Wenqiang, No.2 Hospital of Integrated Traditional Chinese and Western Medicine of Nanchang
　　
　　Keywords: Cancer infection prevention
　　 Introduction
　　 Is cancer contagious? Can cancer be prevented?
　　1.Cancer is a cellular disease which results from body cells’ self mutation caused by external injuries. It will deplete the body of nutrients and leads to death.
　　2. Micro organisms (bacteria) are brought by external organisms. They can produce deadly toxins. Therefore, cancer is not infectious, and micro-organisms (bacteria, virus) are infectious.
　　3.Why is cancer not infectious?
　　Because cancer is a cellular disease which results from body cells’ self mutation caused by external injuries. It has essential difference with microorganisms (bacteria, virus)in both cause and features. Therefore, cancer is not infectious. It just grows in the body ceaselessly by division (differentiation). It depletes the body of the nutrients and leads to death of the patient.
　　4. Prevention of Cancer
　　Cancer is totally different from AIDS. Many factors, which are closely related to daily life, can lead to cancer, which makes cancer extremely hard to prevent. AIDS mainly has three transmission routes: blood transmission, sex transmission and mother-to-child transmission, with mother-to-child transmission secondary to the other two. Therefore, the two main incentives are blood transmission and sex transmission (mother-to-child transmission) .Aids can be prevented if we control and regulate illegal blood collection, drug abuse and dirty sexual contact. Therefore, AIDS is completely preventable, and it is convenient efficient and cost effective to prevent, while cancer is very hard to prevent. We need to make breakthroughs in the treatment of cancer.
　　5. Discussion
　　Cancer is not infectious. Why we still cannot prevent it?
　　Cancer is a cellular disease which results from body cells’ self mutation caused by external injuries. Therefore, it is not infectious. Too many factors which are closed related to real life may result in cancer, such as smoke, dust, radiation, sunlight, drinking water, toxic and hazardous substances in some food etc. And in fact it is really difficult to be free from the above substances! Therefore, cancer is hard to prevent and what we can do is very limited. The key lies in the breakthrough in treatment.

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