Fiber
accomplishes many beneficial tasks not the least of which includes
supporting the digestive system. As research and studies continue
it is clear that you can only benefit your health by consuming a
high fiber diet. Fiber has been shown in studies to help reduce the
rates of some forms of cancer, namely colon and breast cancer. Certain
kinds of fiber have been found to lower levels of cholesterol
in the blood.
These
are only a few of the major benefits of a high fiber diet. There
are many less noticeable advantages, such as encouraging healthy
skin and nails, increased energy, helpful with weight control, etc.
A number of foods are good sources of fiber, including fruits, vegetables,
legumes, nuts, and whole grains.
There
are two kinds of fiber: soluble and insoluble. Your body requires
both kinds. Both types of fiber can be partially digested by bacteria
in the gastrointestinal tract.
Insoluble
fiber helps move food and digestive by-products through the large
intestine (colon) and out of the body.
The
faster that food and by-products travel through the digestive tract,
the less time there is for potential cancer-causing substances to
work. Insoluble fiber is the bran in grains, the pulp of fruit, and
the skin of vegetables.
Only
soluble fiber appears to have the ability to lower cholesterol levels
in the blood. Soluble fiber can be found in a wide variety of foods,
including apples, oats, guar gum, dried beans, and green vegetables.
The
National Cancer Institute (NCI) has recommended that adults consume
20-30 grams of fiber daily. According to numerous surveys conducted
by the NCI, the average intakes of dietary fiber for adults was 12-14
grams. This is an indication that a large portion of the U.S.
population did not meet the NCI minimum standards for dietary fiber
intake on the day prior to their examination.
Sources:
National
Center for Health Statistics - Third National Health and
Nutrition Examination Survey, Phase 1
AMA
- American Medical Association, Nutritional Basics
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