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Many
health experts are advising
people
of all ages and ethnic
origin to consume more
dietary fiber. There is a
lot of research suggesting
that fiber may prevent
cancer, diabetes, heart
disease and obesity. It has
been shown to increase
intestinal tone and supports
the body’s own cleansing and
elimination processes. This
one benefit alone may save
your life in the long run!
The world’s alimentary
problems can be summed up in
to two words, processed
food! These so called
convenience foods are so
prevalent in the society
because no one wants to take
the time to cook their own
meals, so they eat out. Or
they buy processed frozen
foods from the grocery
store. They foods are not
only devoid of any
significant nutrient
content; they also contain
very little dietary fiber.
So what
constitutes fiber? Well you
have probably heard it
called roughage in the past,
but today scientists and the
general public use the term
fiber. Fiber is a type of
undigestable complex
carbohydrate found in
plants. Fiber is not
considered a food; fiber in
itself has no caloric value
because the body cannot
digest or absorb it.
Therefore, high fiber foods
have a tendency to be low in
fat and are typically low in
calories e.g. foods such as
fruits and vegetables. Fiber
can be divided into two
categories according to
their physical
characteristics and affects
on the body: there are the
water insoluble (‘course’
fiber) and muciligenic
types. Each form functions
differently and provides
different health benefits.
The insoluble fibers, such
as cellulose, hemicellulose
and lignin are not soluble
in water. The muciligenic
fibers such as gums, cereals
and pectin’s are more
soluble in water.
From a
physiological standpoint the
intestines function as the
body’s own waste disposal
system. Food in liquid form
moves from the small
intestine into the colon for
final processing. Here most
of the water and minerals
are reabsorbed, leaving the
semi-solid waste which is
evacuated through the
rectum. Any breakdown in the
intestine’s natural
cleansing process is
accompanied by risks of poor
food assimilation and
toxicity build-up. Highly
refined foods, including
sugar and white flour, make
us susceptible to intestinal
problems such as colitis,
constipation, diverticulitis,
hemorrhoids, irritable bowel
(IBS) and Crohn’s disease.
These types of disorders are
rare in parts of the world
where native foods provide
many times more fiber than
the modern highly processed
diet we have here in the
U.S. Although fiber is not
considered an essential
nutrient, the U.S. Surgeon
General and many
professional health
organizations recommend a
diet containing 20-35 grams
of fiber a day. The average
American diet barely
consumes half of this amount
with an intake of 10-15
grams daily, if that.
Increasing the consumption
of complex carbohydrates is
the best way to increase
fiber intake. A large
increase in fiber over a
short period of time may
result in bloating,
diarrhea, gas and general
discomfort. It is important
to add fiber gradually over
a period of weeks to avoid
abdominal problems.
The
benefits of a high fiber
diet range from
increased cardiovascular
functionality to
possible weight loss and
the list goes on from
here. When you are
‘regular’, the world is
a much nicer place to
be! †
REFERENCES:
1) Kiehm TG,
Anderson JW, Ward K.
Beneficial effects of a high
carbohydrate, high fiber
diet on hyperglycemic
diabetic men. Am J Clin Nutr
1976; 29: 895.
2) Trowell H. Dietary fiber,
ischemic heart disease and
diabetes mellitus. Proc Nutr
Soc. 1973; 32(3):151-157.
3) Anderson JW, Major AW.
Pulses and lipaemia, short-
and long-term effect:
potential in the prevention
of cardiovascular disease.
Br J Nutr. 2002; 88 Suppl
3:S263-271. |