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What is smoking? Smoking is the process of inhaling and exhaling smoke of a tobacco. The medical evidence is very clear, it says that smoking cigarettes endangers your health. Smoking contributes substantially to the development of such diseases as lung cancer, emphysema, bronchitis, and the development of respiratory diseases among babies What happens if the person smokes a cigarette? Cigarette smoke contains about 4,000 chemicals including nicotine, carbon monoxide, such other poisonous substances that leads to a growing number of deaths among smokers. Here are the harmful substances of cigarette smoke and their effects to the body: A. Nicotine is the poisonous drug stimulant that can be inhaled from cigarette smoke , especially if the cigarette is already short. It can also provoke an addictive response. What are the harmful effects of nicotine: Something to read: Home Economics and Livelihood Education 7 Seibo College 56 1. Stroke is caused by the absence of blood in the brain. 2. Heart Attack means when the heart stops pumping due to constricted blood vessels. Nicotine affects the liver’s role in removing the fats from the blood which can caused the blood vessels to clog and eventually blocked. 3. Poor blood circulation- absorption of nicotine in the blood , makes the blood vessels to constrict, hence making it difficult for blood to pass through. 4. Uneasiness, irritability and laziness. | Quizalize