The Causes of Cancer
Cancer is the number one killer in America today.We can say the known causes of cancer are radiation,sunlight,pollution,cigarette smokingand improper diets.I will explain the major causes of cancer,but before I proceed let me define the term "cancer."To be defined cancer is an abnormal,uncontrolled growth of cells that can spread beyond their natural boundaries to other parts of the body.Cancers can develop in numerous parts of the body.
The importance of radiation as a cause of cancer has been recognized for many years.Exposure to toxic levels of radiation produces genetic damage,and since the genes control cell behavior this can lead either to cancer or cell death,depending upon the dose.the most common type of cancer which is caused by radiation is known as leukemia.Another type of cancer caused by raidiation is ,cancer of the white blood cells.
Too much sunlight can also cause cancer.Sunlight is combined of both visible and invisible radiation. The invisible radiation known as ultraviolet light may cause skin cancer, but only if the exposure is prolonged and intense.I would say that the smartest thing to do if exposed to sunlight is use some type of protection on your skin.Vitamin E may offer some protection.
It is obvious that cigarette smoking is the single most powerful cause of lung cancer.The increase in risk has been observed not only in men, but more recently in women,for smoking has come engage in activities formerly considered the domain of men.
Depending upon the number of cigarettes smoked, and the number og cigarrettes smoked each day can increasethe risk of lung cancer.It is clear that there is a definite and direct dose-response relationship between the smoking dose and the development of cancer.I believe that if someone smokes even a pack of cigarrettes a day it will increase the risk of getting cancer.
Eating the right foods in your everyday lifeis very important.
In the United States 85 to 90 percent of all lung cancer cases are related to smoking. Cigarette smoking is the main cause of lung cancer (Scientific American, “Lung Cancer';). Second-hand smoke, inhaled by non-smokers, increases a person’s chance of acquiring lung cancer (Beau Halton). Men who smoke increase their chance of dying from lung cancer about 23 times and women increase their chances 13 times (“Lung Cancer Awareness Campaign,'; 3/23/99). However, lung cancer may also be caused by long term exposure to radon, a naturally present radioactive gas (SIRS, “What is Cancer?';). The residue of burned petroleum and coal can contribute to lung cancer (Scientific American, “Lung Cancer';). The development of lung cancer seems to be also affected by genes. The gene histidine triad blocks the formation of tumors, so a defective gene could make one more likely to form a tumor (Microsoft, “Lung Cancer';).
Epidemiologists had identified many important causes of cancer by the early of 1980s. Many types of cancer vary in incidence by more than an order of magnitude between different populations and every type is rare in some part of the world. Many specific causes cancer are now known, the most common are by smoking, obesity and a few oncogenic viruses, but a large proportion of global variation for common cancers such as breast, prostate, colon and rectum remains unexplained (Peto J. , 2001). According to Richard Doll and Richard Peto, pollution accounts for 2% of all cancer cases and geophysical factors account for another 3% while 80% to 90% of cancers are caused by “environmental factors”. Environmental factors are the non-genetic factors which are smoking, diet, occupational exposure to chemicals and geophysical factors (naturally occurring radiation, man-made radiation, medical drugs and radiation and pollution.
Cancer of the lung was nearly nonexistent in the early 1900’s. By the middle of the 20th century an epidemic became apparent throughout the United States and the rest of the world. It is primarily correlated with the widespread abundance of cigarette smoking in the world. The tobacco industry has multiplied its production immediately prior to World War I. There was a typical 20 to 30 year lagging period between the initiation of cigarette smoking and the actual tumor formation in the lungs. Lung cancer is the cancer that originates in the tissues of the lungs. It occurs when cells in the lung start to grow rapidly in an uncontrolled manner. Lung cancer can start anywhere in the lungs and affect any part of the respiratory system. Most of all lung cancer cases start in the lining of the bronchi (health-cares.net, 2005). It is the leading cause of all cancer deaths in the world. During this time the tobacco companies would continue to say that cigarette smoking was not addictive and did not cause any type of cancer. Even with all evidence in the world today about tobacco causing cancer, Tobacco companies still remain the most profitable business in the world. Lung cancer is very common in both women and men. Women account for about 40 percent of the lung cancer cases in the world. Women who smoke are more than twice as likely to develop lung cancer as those of men who smoke (Tavor, 2005).
To begin, people can receive certain forms of cancer if they use tobacco products. When discussing health problems of smoking, the author writes, “Smoking harms nearly every organ in the body” (Harms of Smoking and Health Benefits of Quitting). Scientists have conducted research and have concluded that using a tobacco product damages cells. The damaged cells become mutated and form cancer cells. The author goes on to explain, “Among the 250 known harmful chemicals in tobacco smoke, at least 69 can cause cancer” (Harms of Smoking and Health Benefits of Quitting). These harmful chemicals are catalysts for many types of cancer. Some of these toxins include arsenic, carbon monoxide, and lead. When directly consumed, these chemicals are very pernicious, so it is obvious that they can cause diseases like ...
Over a hundred years ago lung cancer was considered a very rare disease. Lung cancer is a disease that is known worldwide. Lung cancer is one of the four most common cancer. Lung cancer is detrimental to the Respiratory System and can cause permanent damage. Lung cancer is a tumor that grows in your lungs and it can also spread to other parts of your body. Early stages of lung cancer are hard to detect because it could take about a year for the tumor to grow to the point when you start experiencing symptoms. The most common cause of lung cancer is smoking cigarettes and other tobacco products. There are other causes like secondhand smoke, asbestos, and lung cancer is common in your family.Lung cancer has different risk factors, symptoms,
The old belief that too much of a good thing can be harmful is often vindicated by science. Sunshine is a good example of this. Exposure to UV radiation in sunlight promotes vitamin D production in the skin. This is healthy. On the other hand, too much UV exposure causes sunburn, skin cancer, and cumulative eye damage. While the health risks of too much UV are well documented, science is only now discovering the downside of excessive blue light exposure.
Genetics, environmental factors and random chance plays a role in a person’s likelihood of developing cancer because they are a huge part of a person’s health. There are some things that you can control and somethings you can’t control. Every choice you make impacts your health either good or bad. If you keep a healthy lifestyle, you can prevent some cancers.
As most of you know, smoking is bad for your health, but what some of you might not know is that you don’t actually have to smoke to be harmed by smoking. Lung cancer, which is the leading cause of cancer deaths in men and women, is mainly caused by cigarette smoking. Secondhand smoking causes approximately 2 percent of lung cancer deaths each year. It causes respiratory disease, Sudden Infant Death Syndrome (SIDS), middle ear disease, and asthma attacks in children.
Cancer is a disease that no one sees coming. It if the rapid replication of mutated cells in a part of your body. When something goes wrong in the copying of DNA, which is a part of cell replication, then mutated cells will form. Cancer cells do not die like ordinary cells and they can also enter or spread different tissues unlike healthy cells. If you look at the process of which cells duplicate, it goes quite slow. If you look at cancer cells duplicating, it is ten times faster than normal. That’s why you have to act quickly to treat the cancer cause it will spread like a wildfire. The type of cancer that was researched and is the main topic right now is skin cancer. There are many causes and it is easy to prevent the disease.
Cancer is a genetic disease that is caused by the changes to genes that control the way our cells function, especially how they divide and grow. Genetic changes that cause cancer can be inherited from our parents. They can also arise during a person's lifetime as a result of errors that occur as cell divide of because damage to DNA caused by certain environmental exposure. In general, Cancer cells have more genetic changes, such as mutations in DNA, than normal cells. Some of these changes may have nothing to do with cancer,
Cancer is a group of diseases characterized by the uncontrolled growth and spread of abnormal cells (American cancer society, 2017). If the spread is not controlled, it can result in death. Cancer causes include life style factors (external) such as tobacco use and non-modifiable (internal) factors, such as inherited genetic mutations, hormones and immune conditions. These risk factors may act simultaneously or in sequence to initiate and/or promote cancer growth.
They can cause increased risks in Leukemia, myeloma, thyroid, bladder, breast, lung, ovarian, colon, esophageal, stomach, liver, lymphoma, and skin cancer (except for melanoma) (“What Causes Cancer?”). One form of radiation is IR, it is released from diagnostic equipment such as X-Ray machines. IR affects any part of the body but mostly bone marrow and the thyroid gland. A fom of IR is radon, which can increase risk for lung cancers in smokers (“Environmental Factors and Cancer Development”). Radon is a colorless, odorless, radioactive gas that is very harmful . Another type of radiation is Benzene. Benzene is a colorless, flammable liquid with a sweet odor. It evaporates quickly when exposed to air. It is formed from natural processes, but most exposure results from human activities. When people are exposed to Benzene they have an increased risk of Leukemia (“What Causes Cancer?”). Exposure to certain chemicals like pesticides and metals can increase your risk for cancer also. Examples are nickel, cadmium, vinyl, chloride, and benzene (“Environmental Factors and Cancer Development”). Not all causes of cancer are from outside forces, some cancers are just passed down by generation or
In addition to skin cancer, direct exposure to the sun's rays can age a person's skin and reduce their quality of life. The most common form of premature aging are wrinkles, age spots, and sagging skin.
What is cancer? Cancer is a group of diseases that is grouped out of control cell growth. I will be explaining how the Environment, are lifestyles, and genetics play a major on how people can develop cancer or catch cancer. There are so many types cancer. Cancer can start in any body tissue. Let’s start with tobacco use. People who smoke can develop lung cancer, not everybody who smokes will develop lung cancer. People who smoke can get cancer in the lungs, mouth throat, and pancreas. It is to be believed that 1 out of every 4 cancers is caused by smoking. Every year 1 out of every smokers die due to lung cancer. Another reason for cancer is the way we eat and how much fiscal activity are body needs to have. Her in America the majority of people eat too much red meat and fewer fruits and vegetables which is
Cigarette smoking is a danger to our life and health. It is the leading known cause of lung cancer. Each year more than 30,000 people will die of lung cancer and 4 out of 5 of them will get it because of cigarette smoke.