Re: Connection Between Colon Cancer And Diet
From: Alan F. (Alan_sli_at_yahoo.com)
Date: 10/30/04
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Date: 29 Oct 2004 21:43:56 -0700
Hey Walt I like the article about the connection between Colon Cancer
and Diet, very informative, here is a quick question for you. How does
one know if they are ingesting enough calcium per day besides the fact
that they can take a calcium supplement that has 1200mg in it?
Also how much is enough? Is there such a thing as too much Calcium
intake?!
Take a look at the findings from the Harvard School of Public Health
about Calcium. I had to pick and choose a couple of paragraphs from
it, but you can find the entire article at:
http://www.hsph.harvard.edu/nutritionsource/calcium.html
dannenberg@cl.uh.edu (Walt D) wrote in message news:<93a79c5e.0410281340.2b32835@posting.google.com>...
> To whom it may concern:
>
>
> Take a look below at some of the facts statements below regarding the
> risk of colon cancer and characteristics of one's diet. Let me know
> what you think?
>
>
> Calories: Total daily caloric intake (also known as total energy
> intake) may be important in colon cancer development. In animal
> studies, it has been shown that cutting calories reduces the formation
> of colon tumors. Human studies also have suggested but not proven
> this. Obesity has also been linked with increased colon cancer risk.
> Consumption of more calories than are burned off causes weight gain
> and obesity.
>
> Fat: Much scientific evidence (from studies in people and animals)
> suggests that the greater the amount of fat in the diet, the greater
> the risk for colon cancer. Animal fat, particularly that derived from
> red meats, is a prime offender. Experiments in animals have found that
> certain fats are worse than others. Saturated or certain
> polyunsaturated fats (such as corn and safflower oils) promote colon
> cancer, whereas other fats, such as those derived from cold water fish
> (fish oils), prevent it. These observations need to be confirmed in
> humans before they can be fully accepted. The ways that dietary fat
> influences colon cancer are not entirely known but are currently under
> intense laboratory investigation such as in our clinical research
> studies at The Rockefeller University Hospital Clinical Research
> Center (http://www.rucares.org).
>
> Cholesterol: Dietary cholesterol intake has been linked to colon
> cancer. However, since evidence for this association has not been
> consistent, this association must be viewed as indefinite until more
> evidence is available.
>
> Fiber: Fiber, the indigestible, mostly plant-based material in the
> food we eat, has been accepted as preventing colon cancer. The
> relationship between fiber and cancer risk demonstrates that the link
> between diet and disease is very complex. Dietary fiber acts as a
> bulking agent, diluting the levels of harmful and potentially
> cancer-causing chemicals in the colon and rectum. It also speeds the
> passage of stool through the colon, thereby reducing the exposure time
> to potential cancer-causing chemicals, and enhancing excretion. Fiber
> may effect a "tumor suppression" gene (a gene that protects against
> abnormal growth of cells). Additionally, fiber may be digested by
> colonic bacteria into beneficial chemicals, such as butyric acid,
> which may protect the colon and rectum against developing
> pre-cancerous polyps (nodules arising from the lining of the colon)
> and cancers.
>
> Fruits and Vegetables: These foods reduce the risk of developing
> pre-cancerous polyps as well as full-blown colon cancers. Most are
> rich in fiber and both groups contain little fat; however, there is
> more convincing evidence about the beneficial effects of vegetables
> than of fruits. The ability of either food group to prevent colon
> cancer is most likely through the action of wide variety of natural
> compounds they contain (such as vitamins, phenolics, isoflavanoids,
> etc.). The combination of these beneficial anticancer ingredients in
> their natural form may be crucial to the effectiveness of these foods
> in cancer prevention. Some of these compounds are also under
> investigation in our research studies at the Rockefeller University
> Hospital.
>
> Calcium: Calcium has been reported to inhibit colon cancer
> development. A recent double-blind placebo-controlled clinical study
> found that 1200 mg of calcium per day, given as a dietary supplement,
> reduced the reappearance of pre-cancerous colon polyps in patients who
> had polyps removed from their colon or rectum previously. Calcium may
> bind to and inactivate cancer-promoting substances, such as bile
> acids, within the colon.
>
> Vitamins and Minerals: Folic acid, the antioxidant vitamins A, C, D,
> E, and the mineral selenium have all been reported to prevent colon
> cancer. However, there is not enough data to declare that each
> unequivocally possesses colon cancer preventive properties. Vitamins
> A, C, E, and selenium may work by preventing damage to the cells the
> lining the colon.
>
> Alcohol and Coffee:The majority of studies indicate that high
> alcoholic beverage intake increases the risk for colon cancer, while
> recent data suggest that coffee consumption may reduce colon cancer
> risk.
>
> Aspirin and Colon Cancer:Nonsteroidal anti-inflammatory drugs (NSAIDs)
> like aspirin are among the most commonly used drugs. Aspirin, which
> recently celebrated its one-hundredth birthday, is the model NSAID.
> Many studies suggest that regular long-term aspirin intake can reduce
> the risk of colon cancer by as much as 50%. Aspirin also seems to
> reduce the incidence of pre-cancerous colon polyps. However, NSAIDs
> have well-known adverse side effects, (such as abdominal discomfort
> and gastrointestinal ulceration and bleeding), and thus should not be
> used casually for colon cancer prevention. One should never take
> NSAIDs for this purpose without being under the care of a physician.
> Efforts have focused on development of safer NSAIDs. New aspirin-like
> agents are being investigated to determine if they are safe and
> effective for the prevention of colon cancer.
>
>
> Thanks for reading,
>
> -Walt D
>
> Info recieved from: http://www.healthology.com/focus_article.asp?b=cancernews&f=colon_cancer&c=connection&spg=FIA
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