毒品的危害英语作文120词
毒品
两个再简单不过的字眼，可出现的频率却非常之高，在报纸上、宣传栏里、书本中……
但是它到底是什么，为什么不仅可以对吸毒者个人造成无法形容的伤害，而且还带给吸毒者家庭乃至社会非常巨大的伤痛与影响呢?
大家都知道，中国最早大量流传的毒品是鸦片。
鸦片的毒瘾相对较低，这是由于鸦片里面的生物碱纯度较低，不过百分之几，一个“大烟鬼”一天一般需要吸食十次以上才会产生快感和幻觉。
纯度低的好处在于，鸦片的毒瘾相对容易戒掉，建国以后中国还有几百万“大烟鬼”。在政府禁烟令和一些药物的帮助下，不到一二年就很快戒掉了！其中还包括抽大烟几十年的老年人。
但是，吗啡的毒瘾就比较难戒。
吗啡是鸦片提炼出来的高纯度生物碱，如果采用静脉注射的方式，吗啡的毒性比鸦片要强10到20倍！
当年张学良就有很重的吗啡毒瘾，在欧洲德国最有名的戒毒医生帮助下，使用了当时最为先进的药物，最科学的方法，又靠了张学良本人的毅力和澳洲顾问瑞纳的督促，足足花了一个月才戒掉了毒瘾。
当时德国戒毒医生对张学良实事求是地说，根本没有治疗吗啡毒瘾的特效药，只能使用一种昏睡药剂治疗。
让戒毒者处于一种昏睡状态，在睡梦中克服毒瘾发作的影响，同时通过身体大量换血和输血帮助肌体重生。大家都知道，这两种方法的危险都是极大，一旦过程中发生问题,不但治疗不好毒瘾，还有可能因为昏睡和大量换血而送命。
张学良为了救自己的命，最终还是同意了，在戒掉毒瘾以后，连德国医生也说是奇迹。张学良大喜之下，赏给德国医生5万大洋！足可见吗啡毒瘾之难戒。
海洛因和冰毒就完全不同了！
海洛因是以吗啡为基础，和醋酸等物质，通过化学方法制造出来的合成品！它是鸦片系列毒品中毒性最强的，纯度也最高，毒性大约是普通吗啡的5倍。鸦片一般需要吸食几十次才可以上瘾，吗啡注射也需要五六次到十几次。
高纯度的海洛因吸食一次就可以上瘾，终身无法戒掉！
这里特别需要说明的是：
海洛因的毒瘾并非像香烟瘾一样，可以通过个人毅力戒掉，它会造成人脑器质性改变,光靠人的毅力是根本无法戒掉的。
从医学角度来说：
吸毒者吸食海洛因以后，海洛因会释放一种阿片肽物质，这种物质是人脑中本来存在的一种神经类物质，它的成分目前科学水平还无法分析，只知道它是控制人体情绪和行为意志的一类内分泌物。
海洛因中的这种物质吸食到人体以后，就会破坏原有的人脑化学平衡，造成人脑非正常的化学状态，引起人的强烈快感和幻觉。
这个快感时间一般持续几个小时,让吸毒者兴奋无比，但是，一旦这段时间过去，人脑又会恢复原有的平衡，吸毒者重新变为吸毒前的状态，习惯兴奋状态的吸毒者，此时会赶到很大的麻木，感官失灵。
危害就在此，如果多次使用海洛因，人脑内的平衡就会被打破，逐步把吸毒以后的危险状态作为这个平衡点。更重要的是，它会造成人脑器质性病变，人脑部会形成一块现代医学无法分析的病灶。
吸毒者逐步成为一种严重脑部疾病患者，靠毅力根本无法戒掉，这就好像断腿断手一样,靠毅力是无法长出新腿的。由于脑部已经病变，吸毒者需要不断通过吸毒恢复那种病态的平衡状态，不然吸毒者就会有严重的生理反应，比如流泪、呕吐、全身剧痛。
这种痛苦由于是脑部生产的，据吸毒者说，一旦毒瘾发作就像千万只蚂蚁在骨头缝中爬，吸毒者根本无法控制身体，大小便都会失禁，此时的吸毒者恨不得当场死掉，很多人就是这时候自杀身亡的。
译文：
drug
The frequency of the two most simple words can be very high, in newspapers, billboards, books ...
But what is it, and why does it not only cause untold harm to individual drug addicts, but also bring great pain and impact to drug addicts 'families and even society?
As we all know, the earliest drug circulating in large quantities in China was opium.
Opium addiction is relatively low, which is due to the low purity of alkaloids in opium, but a few percent, a "heavy smoker" generally needs to smoke more than ten times a day to produce pleasure and hallucinations.
The advantage of low purity is that opium addiction is relatively easy to quit. After the founding of the People's Republic of China, there are still millions of "heavy smokers". With the help of the government's smoking ban and some drugs, it was quickly quit in less than a year or two! They also include older people who have smoked cigarettes for decades.
However, morphine addiction is more difficult to quit.
Morphine is a high-purity alkaloid extracted from opium. If intravenous injection is used, morphine is 10 to 20 times more toxic than opium!
In that year, Zhang Xueliang had a heavy morphine addiction. With the help of the most famous drug treatment doctor in Europe and Germany, he used the most advanced drugs at that time. The most scientific method relied on Zhang Xueliang's own perseverance and the supervision of Australian Guwenruina. Took a month to get clean.
At that time, the German drug treatment doctor told Zhang Xueliang realistically that there was no special drug for the treatment of morphine addiction and only one sleeping agent could be used for treatment.
Let the drug addicts be in a lethargic state, overcome the effects of drug addiction in their sleep, and help the muscle regenerate through mass blood exchange and blood transfusion. As we all know, the dangers of both methods are great. If problems occur in the process, not only can they not cure drug addiction, but they may also die from lethargy and mass blood exchange.
In order to save his life, Zhang Xueliang finally agreed. After quitting drug addiction, even German doctors said it was a miracle. Zhang Xueliang was overjoyed and rewarded the German doctor with 50,000 dollars! Enough to see that morphine addiction is hard to quit.
Heroin and meth are completely different!
Heroin is based on morphine, acetic acid and other substances, through the chemical production of a synthetic product! It is the most toxic of the opium series, the highest purity, and the toxicity is about five times that of ordinary morphine. Opium generally takes dozens of doses to become addictive, and morphine injections take five to six to a dozen times.
High purity heroin can be addictive once, can not quit for life!
It is particularly important to note that:
Heroin addiction is not the same as addiction to cigarettes. It can be quit through personal perseverance. It can cause organic changes in the human brain. Human perseverance alone can not quit.
From a medical point of view:
After heroin is used by drug addicts, heroin releases a tablet peptide substance that is a neurotic substance that originally existed in the human brain. Its composition can not be analyzed at the current scientific level. It only knows that it is the control of human emotions and behavior. A class of internal secretions of the will.
When this substance in heroin is sucked into the human body, it will destroy the original brain chemical balance, causing the abnormal chemical state of the human brain and causing strong pleasure and hallucinations.
This euphoric time usually lasts for several hours and excites drug addicts. However, once this time passes, the human brain will regain its original balance, drug users will become the state before drug use, and drug users who are accustomed to excitement will arrive at this time. A lot of numbness. Sensory failure.
Here's the danger. If heroin is used many times, the balance in the human brain will be broken, and the dangerous state after drug use will gradually be used as this balance. More importantly, it causes organic lesions in the human brain, and the human brain forms a lesion that modern medicine can not analyze.
Drug addicts are gradually becoming a serious brain disease. Perseverance can not quit. It is like breaking a leg and breaking a hand. Perseverance can not grow new legs. Because the brain is already diseased, drug addicts need to constantly use drugs to restore that pathological state of balance. Otherwise, drug addicts will have serious physiological reactions, such as tears, vomiting, and severe pain throughout the body.
This pain is caused by the brain. According to drug addicts, once the drug addiction breaks out, it is like millions of ants crawling in bone seams. Drug addicts simply can not control their bodies and urinate. At this time, drug addicts would like to die on the spot. Many people committed suicide at this time.