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A study suggested that men might lower their risk of prostate cancer
by eating vegetables. Researchers found that more than 1,700 men
with and without prostate cancer, who consumed the most fiber mainly
from vegetable sources, had decreased their chances of developing
the disease. While some studies showed that "Western"-style
diets consisting of large amounts of animal fat and dairy products
increased the risk of prostate cancer, other diets rich with fruits
and vegetables helped stave off the disease. However, not all of
the studies pointed to these conclusions and the risk of prostate
cancer still remains uncertain.
Evidence has shown the positive benefits of how fiber-rich foods
lowered the risk of heart disease and some other cancers, however
studies regarding fiber and its relation to prostate cancer remains
inconclusive.
One study categorized men’s fiber intake according to the
type and source of fiber. Fiber can be found in two forms, soluble
and insoluble. Soluble fiber sources include vegetables, fruit,
oatmeal and legumes that partially dissolve in water. Insoluble
fiber sources include whole grains, seeds and skin on the fruit
that pass through the digestive system mainly intact.
Participants of the study included 1,745 men between the ages of
46 and 74 and involved studying their diet and lifestyle habits.
The men were surveyed between 1991 and 2002 while being treated
for cancer. Some 1,300 of the men had prostate cancer and the others
were being treated for conditions other than cancer.
Findings from the study revealed the men who had consumed the highest
overall amount of fiber had a slightly lower risk of prostate cancer
than the men who had consumed the lowest amount of fiber. Researchers
discovered that after studying specific kinds of fiber, vegetables
appeared to be the most protective form of fiber and the men who
consumed most of their fiber from vegetables were 18 percent less
likely to develop prostate cancer.
Compared to vegetables, the fiber received from fruit or grains
didn’t show a decrease in prostate cancer risks.
International
Journal of Cancer March 2004;20;109(2):278-80
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