Sunday, August 17, 2008 ; ♥
Carcinogenic
Carcinogenesis (meaning literally, the creation of cancer) is the process by which normal cells are transformed into cancer cells.
A carcinogen is a substance that is capable of causing cancer in humans or animals. If a substance is known to promote or aggravate cancer, but not necessarily cause cancer, it may also be called a carcinogen. Though there are many things that are believed to cause cancer, a substance is only considered carcinogenic if there is significant evidence of its carcinogenicity.
A carcinogen may act on deoxyribonucleic acid (DNA), causing dangerous changes, or it may work to increase the rate of cell division. This change in cell division may work to increase the probability of DNA changes. Some carcinogens promote the development of cancer in other ways as well.
It is important to note that carcinogens don’t lead to cancer after every exposure. Some cause cancerous changes following high-level, prolonged exposure, while others may cause damage at lower levels and shorter exposure periods. Furthermore, an individual’s unique genetic makeup may influence the body’s response to a carcinogen.
Many substances have been identified as carcinogenic. Some commonly known carcinogens include *asbestos, radon, certain pesticides, arsenic, and tobacco smoke. Smokeless tobacco is a known carcinogen as well.
One major carcinogen originates from something vital to life. The sun emits ultraviolet rays that are carcinogenic. Ultraviolet radiation is known to lead to a variety of cancers affecting the skin.
Sadly, carcinogens ***can be found in everything from snack foods and drinks to certain types of plastic and everyday objects. All too often, a substance **isn’t identified as carcinogenic until it has been used or consumed by humans for many years. Furthermore, so many substances are rumored to be possible carcinogens that it can be hard to figure out just what is safe to consume, breathe, or use, and what is not.
In some cases, substances that are helpful to man are also carcinogenic. Chlorine is one such carcinogen. Chlorine is helpful for disinfecting water for bathing, drinking, and swimming. At the same time, its byproducts are capable of causing a range of illnesses, including lung cancer.
*asbestos are usually used in the chemical plant . It is used to protect against something which i have forgot and it is very effective, however , once we are going to change the asbestos or take it down , the dust from the asbestos will go into our body as we breathe and the asbestos will stick into our lung and cause us to have this sickness . As the years go by the effect of this sickness took effect . We cannot wear any respirators inside which i don't know why ( all these are being told by my teacher) and these are the reason why we people that are working in the chemical plant most likely to get all these diseases . But right now they are hiring the people who have this carcinogen to take off the asbestos thingy.
They still do not have any solution to solve this , but i really hope they could think up some before more and more people got this . As you can see , not ALL the people who work in the chemical plant will get this but almost everyone as *** it can found in everything .
super scary loh . Even the things that can help us is also an carcinogen .
Just remember this point **isn’t identified as carcinogenic until it has been used or consumed by humans for many years.
It is a long term sickness which will take effect when you are old .
For more information about this please read up
http://en.wikipedia.org/wiki/Carcinogenesis
And thanks to
http://www.wisegeek.com/what-is-a-carcinogen.htm
for the info .
The blue one is sherlin's writing .
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