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Cancer is more technical than just a disease that causes people pain and suffering. ... An individual unruly cell that has escaped normal regulatory control mechanisms is the basic unit of cancer. ... But, when two cancer cells touch each other, somehow the stop signal is not given or is not received properly. The DNA is not turned off and the cancer cells continue to grow and divide. ... Cancer cells give off, or secrete a certain chemical that dissolves this glue. The cancer cells can squeeze through the normal cells and spread through them. ... They cause cancer: some of these genes give cells the ability to go on growing indefinitely; others affect the way cells interact with their neighbors. When a cancer cell divides, each of its daughter cells receives a complete set of genes-including the activated genes that prompt them to grow furiously, too. ... This is cancer.
Cancer cells do not stick to each other well, and may break away and be carried along in the blood stream or lymph channels. ... This migration of cancer cells by the blood streamed lymph circulation is called metastasis. ... Cancer cells do not necessarily grow faster than normal cells; they continue to grow under conditions when normal cells would stop. ... Therefore, the more abnormal the cell appears, the more malignant the cancer. ... Cancer cells may invade the bloodstream and establish colonies far from the original site called metastasis. One of the major sources of cancer is the body itself. Researchers have found evidence that some people are programmed to get cancer before birth. These people may have a certain gene inside each cell that triggers the body to begin growing a cancer at a certain age. ...
The field of cancer study is called Oncology. ... Cancer is the most aggressive disease of a larger class known as neoplasms. ... These traits are passed down as the cell reproduces therefore spreading the cancer. ... Cancer always refers to metastasized tumors but the term tumor is not always necessarily cancer. ... After a cancer forms, it can also change from a benign to a malignant state, therefore making the cell grow at a more rapid rate. ... In the US, skin cancer is the most common cancer, then prostate cancers in males, and then breast cancer in women. Leukemia is clearly the dominant cancer in children. The number one killing cancer in the world today is lung cancer, mostly caused by the smoking of cigarettes. Some researchers have stated that if Americans stopped smoking, lung-cancer deaths could disintegrate within two decades. Stomach cancer is the second most fatal cancer in males and third is the leading cancer in women, breast cancer.
The prevention of cancer rides upon what is known about the causes. Any agent that causes cancer is called a carcinogen. ... Chemicals that cause cancer have many different molecular structures and can be just about any type of chemical. Some substances that cause cancer are complex chemicals and gases, certain metals, drugs, hormones, substances in molds and plants and many more. ... That and hydrocarbons are carcinogens in cigarette smoke and increase the risk of lung cancer. ... Many drugs as well as alkalizing agents used to treat cancer are carcinogenic. Even though these chemicals break the DNA of cancerous cells, which kills them, it also induces cancer in normal cells. Some hormones created in humans can also cause cancer. High levels of estrogen, which is marked as a female hormone, can increase the chances of getting a cancer of the uterus (in women). Aflatoxin B is a substance produced by the mold Aspergillus’s that causes a number of cancer, but generally liver cancer. ...
Ultraviolet and high-energy radiation is also an agent for some types of cancer. A bond exists between exposure to the sun’s ultraviolet rays and the occurrence of skin cancer in humans.
Approximate Word count = 3169
Approximate Pages = 12.7
(250 words per page double spaced)
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