Enviromental tobacco science essays

Enviromental tobacco science essays Cigarette smoking is not only just hazardous to the smoker, but to the environment as well. Tobacco has been linked to at least 400,000 deaths in 2002 by the U.S. Centers for Disease Control and Prevention. Between 30,000 and 60,000 of those deaths were as a result of being exposed to environmental tobacco smoke, also known as second hand smoke. Continuous exposure to ETS (environmental tobacco smoke) is strongly associated with respiratory effects, carcinogenic effects, and cardiovascular effects. Environmental tobacco smoke consists of two types of burning tobacco. The first form is what is known as sidestream smoke. Sidestream smoke is smoke that is released between puffs of a burning cigar or cigarette. The second form is known as mainstream smoke. Mainstream smoke is smoke that is exhaled by the smoker. Sidesteam smoke contains the same harsh chemicals that the smoker inhales, where as mainstream smoke is somewhat diluted by the smoker as it is inhaled before it is released. The chemicals found in environmental tobacco smoke are the same as the ones that are found in the tobacco itself. Some of these chemicals are known as carcinogens, which are cancer causing substances, mutagens, which are substances that promote genetic changes in cells, and developmental toxicants, which interfere with normal cell development. Tobacco smoke contains nicotine and carbon monoxide. All of these chemicals have adverse affects on the human body. One affect of environmental tobacco smoke is cancer. As a result of the chemicals nitrosamines and polycyclic aromatic hydrocarbons that are present in tobacco smoke being inhaled and reacting with proteins and enzymes that are found in the human body compounds known as carcinogens are produced which interfere with normal cell development and thus produces cancer cells. Carcinogenicty associated ...