Cancer
Páginas: 2 (461 palabras)
Publicado: 21 de enero de 2013
Cancer is the uncontrolled growth of abnormal cells in the body. Cancerous cells are also called malignant cells.
Causes, incidence, and risk factors
Cells are the building blocks of livingthings.
Cancer grows out of normal cells in the body. Normal cells multiply when the body needs them, and die when the body doesn't need them. Cancer appears to occur when the growth of cells in thebody is out of control and cells divide too quickly. It can also occur when cells forget how to die.
There are many different kinds of cancers. Cancer can develop in almost any organ or tissue, suchas the lung, colon, breast, skin, bones, or nerve tissue.
There are many causes of cancers, including:
Benzene and other chemicals
Drinking excess alcohol
Environmental toxins,such as certain poisonous mushrooms and a type of poison that can grow on peanut plants (aflatoxins)
Excessive sunlight exposure
Genetic problems
Obesity
RadiationViruses
However, the cause of many cancers remains unknown.
The most common cause of cancer-related death is lung cancer.
The three most common cancers in men in the United States are:Prostate cancer
Lung cancer
Colon cancer
In women in the United States, the three most common cancers are:
Breast cancer
Colon cancer
Lung cancer
Some cancersare more common in certain parts of the world. For example, in Japan, there are many cases of stomach cancer, but in the United States, this type of cancer is pretty rare. Differences in diet mayplay a role.
Some other types of cancers include:
Brain cancer
Cervical cancer
Hodgkin's lymphoma
Kidney cancer
Leukemia
Liver cancer
Non-Hodgkin'slymphoma
Ovarian cancer
Skin cancer
Testicular cancer
Thyroid cancer
Uterine cancer
Symptoms
Symptoms of cancer depend on the type and location of the cancer....
Causes, incidence, and risk factors
Cells are the building blocks of livingthings.
Cancer grows out of normal cells in the body. Normal cells multiply when the body needs them, and die when the body doesn't need them. Cancer appears to occur when the growth of cells in thebody is out of control and cells divide too quickly. It can also occur when cells forget how to die.
There are many different kinds of cancers. Cancer can develop in almost any organ or tissue, suchas the lung, colon, breast, skin, bones, or nerve tissue.
There are many causes of cancers, including:
Benzene and other chemicals
Drinking excess alcohol
Environmental toxins,such as certain poisonous mushrooms and a type of poison that can grow on peanut plants (aflatoxins)
Excessive sunlight exposure
Genetic problems
Obesity
RadiationViruses
However, the cause of many cancers remains unknown.
The most common cause of cancer-related death is lung cancer.
The three most common cancers in men in the United States are:Prostate cancer
Lung cancer
Colon cancer
In women in the United States, the three most common cancers are:
Breast cancer
Colon cancer
Lung cancer
Some cancersare more common in certain parts of the world. For example, in Japan, there are many cases of stomach cancer, but in the United States, this type of cancer is pretty rare. Differences in diet mayplay a role.
Some other types of cancers include:
Brain cancer
Cervical cancer
Hodgkin's lymphoma
Kidney cancer
Leukemia
Liver cancer
Non-Hodgkin'slymphoma
Ovarian cancer
Skin cancer
Testicular cancer
Thyroid cancer
Uterine cancer
Symptoms
Symptoms of cancer depend on the type and location of the cancer....
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