Cigarette smoking is a major preventable cause of disease worldwide. Nicotine is an addictive drug. It causes changes in the brain that make people want to use it more and more. In addition, addictive drugs cause unpleasant withdrawal symptoms. Nicotine in cigarette smoke affects mood and performance and is the source of addiction to tobacco. Nicotine comes in various forms: cigarettes, cigars, pipe tobacco, smokeless tobacco and chewing tobacco.
Tobacco addiction, the major cause of death in the world, is a culprit for about 5 million deaths each year or 1 in 10 adult deaths. Nicotine meets the criteria of an enormously addictive drug. "Cigarettes and other forms of tobacco are addicting and pharmacologic and behavioral characteristics that prove tobacco addiction are analogous to those that determine addiction to drugs such as heroin and cocaine." Surgeon General's report says, 1998.
Nicotine Effects on Body
When a person smokes a cigarette, the body reacts instantly to the chemical nicotine in the smoke. The nicotine in the smoke is quickly engrossed into the blood and starts affecting the brain within 7 seconds. It affects the entire body. Nicotine causes a short-term increase in blood pressure, heart rate and the flow of blood from the heart. It also causes the arteries to narrow.
It also acts on the nerves that control respiration to change breathing patterns. Nicotine is baneful; in fact one drop of purified nicotine on the tongue will kill a person.
A few puffs of a cigarette can consequence in dizziness, headache, nausea, coughing and gagging, abdominal cramps, and possibly vomiting or weakness that the person must develop a tolerance for, if they wish to continue smoking.
To addicted users, nicotine triggers both stimulant and calming effects. It's an established nicotine truth that it is a major hazard factor for heart disease and stroke.
Source : chantixpharma.com
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