| The exact reason why colon cancer
| |
| | simple presence of one or more risk
|
| develops in some persons and not in
| |
| | factors does not necessarily mean that
|
| others is not clear. The incidence of
| |
| | someone will develop colorectal cancer.
|
| colon cancer is quite varied among
| |
| | On the other hand absence of all risk
|
| different countries and within different
| |
| | factors does not mean that an individual
|
| ethnic groups inside the same country.
| |
| | will not develop colorectal cancer, but
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| Industrialized countries like United
| |
| | generally more risk factors you have
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| States, Canada, UK, Western Europe,
| |
| | higher is the chance of developing
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| Australia and Japan have a much higher
| |
| | colorectal cancer. Environmental factors
|
| incidence of colorectal cancer compared
| |
| | also may be playing a role in the
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| to the less industrialized parts of the
| |
| | development of colorectal cancer. People
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| world like Asia, Africa, and South
| |
| | who migrate from areas of low risk to
|
| America. Colorectal cancer represent
| |
| | areas of the world with higher risk of
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| over 9 percent of all cancers in men and
| |
| | developing colorectal cancer, they tend
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| about 10 percent of all cancers in women
| |
| | to acquire the risk of the country to
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| world-wide. In industrialized countries
| |
| | which they are migrating. This finding
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| the incidence of colorectal cancer can be
| |
| | suggests the presence of environmental
|
| as high as 12 to 14 of all cancers, and
| |
| | factors causing higher risk of developing
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| in non-industrialized countries much
| |
| | colorectal cancer. Changes in dietary
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| lower rates of about 7 to 8 percent of
| |
| | factors associated with migration may
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| all cancers diagnosed may be colorectal
| |
| | also be contributing to this increase in
|
| cancer.
| |
| | risk associated with migration from low
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| Excluding skin cancer, colorectal cancer
| |
| | risk areas to higher risk areas.
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| is the third commonest cancer diagnosed
| |
| | Risk factors for the development of
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| in the United States. Each year over
| |
| | colorectal cancer include the following:
|
| 100,000 Americans are diagnosed with
| |
| | - Age over 50 years
|
| colon cancer and over 50 percent of these
| |
| | - Increased fat intake
|
| patients will die from colorectal cancer.
| |
| | - Large intestinal polyps
|
| Colon cancer incidence is not much
| |
| | - Family history of colon cancer
|
| different between males and females,
| |
| | - Inflammatory bowel diseases like
|
| however colon cancer is slightly more
| |
| | ulcerative colitis and Crohn's disease.
|
| prevalent in women compared to men (ratio
| |
| | - Personal history of other cancers
|
| of 1.2:1) but the rectal cancer is more
| |
| | - Sedentary habits and lack of exercise
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| common in males (ratio of 1.7:1).
| |
| | - Obesity
|
| Even though we do not know the exact
| |
| | - Diabetes
|
| cause of development of colorectal
| |
| | - Smoking
|
| cancer, scientists have recognized
| |
| | - Alcohol content
|
| several factors that can increase the
| |
| | - Genetic colon cancer syndromes like
|
| risk of development of colorectal cancer.
| |
| | Familial adenomatous polyposis or
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| A risk factor for a disease is any
| |
| | Hereditary Non-polyposis Colon Cancer
|
| condition that makes a person more likely
| |
| | (HNPCC) Persons who have high risk of
|
| to develop that diseases. Some of the
| |
| | colorectal cancer may undergo screening
|
| risk factors like dietary factors are
| |
| | for colorectal cancer with colonoscopy
|
| modifiable by the person involved while
| |
| | once every 2 to 3 years. Screening
|
| some other factors like age are
| |
| | colonoscopy is recommended for every one
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| un-modifiable. These risk factors may act
| |
| | who is 50 years or older. If someone has
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| in combination, and this combination of
| |
| | a higher than average risk of developing
|
| risk factors may be associated with
| |
| | colorectal cancer, the screening may be
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| cumulative increase in the risk of
| |
| | initiated earlier than 50 years.
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| development of colorectal cancer. The
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| |
|
