What is Tobacco Addiction?
Every smoker knows that tobacco is harmful, but they still have the compulsive need to use it. They are addicted to tobacco products including cigarettes, cigars and smokeless tobacco. Millions of people try to quite each year but most of them fail, some even pick up smoking within a week. What makes tobacco addictive is nicotine. Nicotine can calm and relax people and reduce pain, stress and anxiety. The pleasure brought by nicotine makes people addicted.
Why Nicotine is So Harmful?
Nicotine is a colorless transparent oily volatile liquid and smells like cigarettes. It is the main reason for tobacco addiction. Within 7.5 seconds, the inhaled nicotine can reach human brain and make them feel relaxed. It can first perk up the central nervous system and then inhibit the excitation. The half-life period of nicotine is 30 minutes. When nicotine content in plasma is lower than stable level, smokers will feel restless, uncomfortable, nausea and headache. This is the time they crave for a cigarette. Nicotine is poisonous. The nicotine in one cigarette can kill a mouse. 25 milligrams of nicotine can kill a cow and 40 to 60 milligrams of nicotine can kill a human.
Based on different processing, one cigarette can contain nicotine varying from 1.5 to 3 milligram of nicotine. Among them, 25% will be burned, 5% will stay in the cigarette end, 50% will diffuse and only 20% will be inhaled by humans. That is why some heavy smokers who smoke one pack of cigarettes will not be poisoned. However, the damage brought by nicotine increases every day.
The following are some examples. First, nicotine can cause stomachache and other stomach diseases. Second, it can increase blood pressure and heart rate and even cause arrhythmia and heart disease. Third, it can damage endobronchitis and cause bronchitis. Fourth, it damages brain cells and causes central nervous system diseases. What’s worse, nicotine can cause cancer.