we already know that there are various kinds of harmful substances in cigarettes. there are three kinds of substance that is very dangerous among the.
1. Nicotine is the principal substance that causes addiction to tobacco. That stimulates the release of epinephrine--adrenaline--into the smoker's bloodstream, forcing the heart to work harder (and offering a possible explanation for why smokers have raised blood pressure). By constricting blood vessels, including the coronary arteries, nicotine compromises the heart's own blood supply.
2. Carbon monoxide the same gas in car exhaust that's lethal in closed spaces, is a major component of the inhaled smoke and gets into your blood, reducing the amount of oxygen carrying capacity of your blood to the heart and the rest of the body.
The effects on the circulatory system are both immediate and dangerous. Nicotine is a stimulant which raises the heart rate and blood pressure, constricts the arteries, and, in conjunction with carbon monoxide, causes atherosclerotic conditions within the artery walls. This clogging process affects the heart and may lead to ischemia (a lack of blood flow and oxygen to the heart muscle) and cause chest pain (angina) or a heart attack as well as other sites of the body such as the brain or peripheral circulation in the extremities, sometimes resulting in gangrene and amputations.
3. Tar in tobacco produces chronic irritation of the respiratory system and is a major cause of lung cancer. Besides these effects, smoking is the main cause of chronic respiratory lung diseases such as Chronic obstructive pulmonary diseases (COPD). COPD, such as emphysema and chronic bronchitis, are major cripplers caused by cigarette smoking. While emphysema is not as deadly as lung cancer, patients with it often envy patients with cancer. People with lung cancer will usually die within six months of diagnosis. Patients with advanced stages of emphysema are permanently crippled, but it may take years for them to die from it. In its later stages, emphysema is a living hell.
1. Nicotine is the principal substance that causes addiction to tobacco. That stimulates the release of epinephrine--adrenaline--into the smoker's bloodstream, forcing the heart to work harder (and offering a possible explanation for why smokers have raised blood pressure). By constricting blood vessels, including the coronary arteries, nicotine compromises the heart's own blood supply.
2. Carbon monoxide the same gas in car exhaust that's lethal in closed spaces, is a major component of the inhaled smoke and gets into your blood, reducing the amount of oxygen carrying capacity of your blood to the heart and the rest of the body.
The effects on the circulatory system are both immediate and dangerous. Nicotine is a stimulant which raises the heart rate and blood pressure, constricts the arteries, and, in conjunction with carbon monoxide, causes atherosclerotic conditions within the artery walls. This clogging process affects the heart and may lead to ischemia (a lack of blood flow and oxygen to the heart muscle) and cause chest pain (angina) or a heart attack as well as other sites of the body such as the brain or peripheral circulation in the extremities, sometimes resulting in gangrene and amputations.
3. Tar in tobacco produces chronic irritation of the respiratory system and is a major cause of lung cancer. Besides these effects, smoking is the main cause of chronic respiratory lung diseases such as Chronic obstructive pulmonary diseases (COPD). COPD, such as emphysema and chronic bronchitis, are major cripplers caused by cigarette smoking. While emphysema is not as deadly as lung cancer, patients with it often envy patients with cancer. People with lung cancer will usually die within six months of diagnosis. Patients with advanced stages of emphysema are permanently crippled, but it may take years for them to die from it. In its later stages, emphysema is a living hell.
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