One of the scariest things in the world is to find out that you or a loved one has cancer. There are many ways cancer can develop, however the cause that interested me the most is when a chemical called a carcinogen causes cells to lose control of their normal function, leading to cancer. .
Carcinogens are defined as any substance or agent that can trigger cancer in animal tissue. Carcinogens are everywhere - they can be organic, such as certain molds and viruses, and they can also be inorganic, such as asbestos and arsenic. Certain types of radiation, such as ultraviolet and X-rays, are also types of carcinogens. Tobacco smoke that is inhaled, as well as DDT and other pesticides that are absorbed through the skin, are considered carcinogens. It has been predicted that environmental carcinogens will cause 30% of Americans to die of cancer by the time they reach the age of 74.
Cancer results when carcinogens cause cells to lose control of their standard functions. This happens when a carcinogen makes a harmful DNA mutation. Once DNA has been mutated, cell development and replication becomes abnormal. Uncontrolled cell division leads to the development of tumors. A tumor that attacks surrounding tissue and spreads to other parts of the body is malignant (a cancerous tumor). A tumor that does not attack surrounding tissue is benign (a generally non-fatal tumor). .
When a cancer cell breaks away from the tumor and spreads to other parts of the body, it is known as metastasis. Metastasizing cells give off digestive enzymes into a blood vessel, and establish tumors in new tissue.
Cancer cells are different from normal cells because their structure is different and they do not have specialized jobs. Cancer cells compete with normal cells for nutrients, and they end up killing normal tissue. Cancer symptoms may include frailty, lack of appetite, and weight loss. Ways to detect cancer include visual observation, palpation, X-rays, CAT scans, ultrasounds, and biopsies.
The American Heritage Dictionary defines a carcinogen as a cancer-causing substance or agent. ... How does one actually contract a carcinogen into their system? ... How does one actually obtain the carcinogen into their system? ... As we already know, cigarettes cause many forms of cancer. ... How does a carcinogen attack the body? ...
Leading Cause of Death in Canada "Chemicals in tobacco smoke are a lethal cocktail; there are six hundred poisons in every cigarette," quoted the CBC news. ... As a result of these carcinogens in cigarettes, lung cancer remains the leading cause of death for both genders. ... Almost one-third of the cancer deaths in men and almost one-quarter in women are due to lung cancer alone (www.canadian-health-network.ca). ... Stiegfried believes that the amount of sex hormones may influence the effects of the carcinogens in the tobacco smoke, and influence the growth rate of lung tumors. ....
It is thought that these adducts cause problems with lung cell reproduction that may eventually lead to lung cancer. ... TSNAs are chemicals that are suspected of causing lung cancer in humans. ... The TSNA known as NNAL also produces lung adenocarcinomas in rodents, although it is a more powerful pancreatic carcinogen (cancer-causing substance) in rats. (http://www.oncologychannel.com/lungcancer/causes.shtml) Carcinogens other than those found in tobacco or tobacco smoke can also cause lung cancer if inhaled in quantity over time. ... However, experts disagree about how much exposure to thes...
It's hard to know for sure whether regular marijuana use causes cancer, but it is known that marijuana contains some of the same, and sometimes even more, of the cancer-causing chemicals found in tobacco. Studies show that a person who smokes five joints per week may be taking in as many cancer-causing chemicals as someone who smokes a full pack of cigarettes every day. ... Although scientists have been convinced in the past that smoking causes lung cancer, the strong statistical associations did not provide absolute proof. This paper pinpoints that mutations in lung cancer cells are caus...
Lung cancer is caused by expose to carcinogens or cancer causing materials. ... Smoking is leading cause of lung cancer. ... Radon is also a leading cause of cancer. ... There are many causes of cancer, mainly by being exposed to carcinogens. ... Through understanding what lung cancer is, what causes it, and how it is treated, patients can make the process of fighting lung caner an easier task. ...
Even for those people who do not smoke has a chance to get this cancer if you are continuous exposed to carcinogens and secondhand smoke. ... It can also destroy the cancer causing cells but this is not proven to work for everyone. ... Secondhand smoke can also cause lung cancer. ... In the year 2002, 3,000 people died from breathing in these carcinogens. ... Knowing how lung cancer can cause so many deaths, I will try to avoid areas where there are many smokers and try to live in a safer environment. ...
Doctors know and have proven that smoking causes cancer. ... The CDC (center for disease control) states that, "American-made cigarettes such as Marlboros contain up to twice as much of a cancer-causing chemical as foreign brands. ... Reynolds, both brands, the most popular in the country, had about the same carcinogen levels." Carcinogen is an agent that causes caner. Tobacco is the number one carcinogen in the country. ...
The greatest risk factor for cancer is prolonged or repeated exposure to carcinogens (chemical biological or physical agents that cause the cellular damage that leads to cancer). Although researchers are still unaware on how carcinogens cause cancer but one theory is that exposure contact with carcinogens when combined with aging, causes and increase in chemicals in the body called free radicals. ... The risk of cancer increases depending on the number of cigarettes smoked per day, the cigarettes tar content and how many years a person smokes. ... This can also cause cancer. 3,000 non smoking ...
One of the most common and most deadly advocates to this is Lung Cancer, which accounts for one third of all cancer deaths in the United States. ... The physical cause of lung cancer is associated with harmful toxins (carcinogens) in tobacco smoke, exposure to asbestos, radioactive dust, and Radon which damages the cells in the lungs. Over time these damaged cells could develop into lung cancer. ... Lung cancer is classified in stages that are determined by the size of the malignant tumor and how far the cancer has spread within the lung, to nearby tissues, and to other org...