Smoking is an activity in which a person burns a specific substance and inhales the vapors produced. The most common substance used for smoking is tobacco which, when burned, produces tar. This tar contains many toxic chemicals that cause damage to the body, primarily the mouth and lungs. Additionally, many people don't realize how dangerous smoking is. In the first seconds after smoking, a mixture of gases is released around the eyes, nose and throat. Then the eyes start to bleed and the throat starts to feel itchy. Usually, the small hairs called cilia serve to rid the bronchi and lungs of foreign and toxic substances. However, when a person starts smoking, it causes the function of these cilia to become paralyzed until they die. After which, the toxins easily enter the lungs and alveoli. Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get an original essay Studies indicate that 70% of what a person inhales while smoking turns into tars in the body that instantly travel to the throat and lungs. Here it kills healthy lung cells. Additionally, smokers who consume an entire pack of cigarettes per day end up consuming a cup of tar over the course of a year. This usually results in a loss of smell and taste. Additionally, the lungs cannot absorb all of these toxic substances. For this reason, these substances immediately enter the bloodstream and circulate to the heart and the rest of the body. Due to the destruction of the alveoli, less gas exchange takes place in the lungs and capillaries, which lowers the oxygen level in the blood and causes an increase in heart rate due to the increased load of work. Fourteen years can be subtracted from the lifespan of every smoker of both sexes (University Health Center, 2009). Smoking is very common among adults and adolescents; and can lead to a dangerous condition known as coronary heart disease (CAD). However, smoking is still not prohibited. First, it is important to be aware of the relationship between smoking and coronary heart disease in order to reduce the risk of this disease. Tobacco is a harmful substance and when smoked, it affects the heart and blood cells. Additionally, they impact the efficiency of the heart as well as the viability and shape of blood vessels. In these circumstances, this may lead to an increased risk of atherosclerosis. As an illustration, atherosclerosis is a type of disease that causes plaque to build up in the arteries. Therefore, this will limit the flow of oxygenated blood to the body parts. Over time, if plaque continues to build up in the arteries, it will lead to the development of coronary artery disease leading to chest pain, heart attack, heart failure, arrhythmia and death. Additionally, nicotine and carbon monoxide make the heart beat faster, leading to an increased risk of blood clots. For greater precision, the rate and blood pressure will fluctuate because nicotine immediately acts on the heart and the nerves that manage breathing. In fact, smokers with high blood pressure are more likely to become impotent than non-smokers. Additionally, 1-2 mg of nicotine is added to each cigarette and can reach the brain within 8-10 seconds. The second factor that helps reduce the risk of coronary heart disease is knowing the reasons why smoking should be illegal. To better understand,.