Re: Why is fiber important in our diet?

Hi Roberto,

You have asked a very important question realting to the importance of
dietary fiber in our diet. As you may know, dietary fiber is found in
plants, and consist of cellulose, hemicellulose, pectins and gums and
mucilages. Dietary fiber can further be classified as insoluble (cellulose,
hemicellulose and some pectins) and soluble (some pectins, gums and
mucilages). Research over tha past 10-15 years has shown that dietary fiber
is important for proper functioning of the G.I. tract. Diets rich in
insoluble fiber add bulk and increase water in the stool which results in
making it easier to pass through the intestines. Insoluble fiber also
speeds passage of food through the intestinal tract, promoting regularity.
Diets rich in soluble fiber have been shown to reduce blood cholesterol
levels by 20% or more. Thus,high fiber diets, particularly those rich in
soluble fiber, can decrease the risk of heart disease. In addition high
dietary intake of soluble fiber also slows the emptying of the stomach
smoothing out blood glucose response which is important for individuals
with Type 2 Diabetes. Finally, some studies have indicated a relationship
between diets high in fiber and reduced risk of colon cancer. Other studies
(Nurse's Health Study to name one) did not find a relationship between
diets high and fiber and reduced risk of colon cancer. Research is still
being conducted in this very important area. Hope this helps to answer your
question.

Sincerely,

Al Bushway
Professor of Food Science