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Colorectal
cancer, the third leading cause of cancer-related deaths in the
United States, is one of the most preventable cancers.
The U.S. Department
of Health and Human Services estimates that more than one third
of colorectal cancer deaths could be prevented if people over
50 had regular screening tests.
Screening
tests can help prevent colorectal cancer by finding pre-cancerous
polyps so they can be removed before they develop into cancer.
These screening
tests are even more important for preventing colorectal cancer
among high-risk individuals.
- If you
have inflammatory bowel disease, researchers recommend that
you start screening tests for colorectal cancer at the age of
40.
- If you
have an immediate family member who has had colon, rectal, breast,
prostate, testicular, or another glandular cancer, researchers
recommend that you be tested when you are 10 years younger than
they were when diagnosed.
Beyond testing,
there are a number of other steps that researchers say may reduce
your risk of developing colorectal cancer.
Diet and
Lifestyle:
Among populations
that consume a diet high in fat, protein, calories, alcohol, and
meat (both red and white) and low in calcium and folate, colorectal
cancer appears to be more likely to develop than among populations
that consume a low-fat, high-fiber diet.
A diet high
in saturated fat combined with a sedentary lifestyle may increase
the risk of colorectal cancer.
There is also
evidence that smoking cigarettes may be associated with an increased
risk of colorectal cancer.
Even a small
amount of exercise each day can work towards reducing colon polyp
growth.
Vitamins
and Supplements:
There are
studies ongoing looking at vitamins A, E, D, and C, folic acid,
calcium, selenium, aspirin, cox-2 inhibitors, and hormone replacement
therapy as chemopreventive agents, that may prevent or reverse
the formation of polyps and colon cancer. These studies, thus
far, have been inconclusive, so no specific recommendations have
been made for the general population. Some of these agents continue
to be evaluated in clinical trials.
Hormones:
If you are
a woman, and are past the age of menopause, studies have shown
a promising link between hormone replacement therapy and reduced
colon polyp growth (but not rectal polyp growth).
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