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LIPASE
Lipase is
an enzyme capable of degrading lipid molecules. The bulk of dietary
lipids are a class called triacylglycerols and are attacked by
lipases to yield simple fatty acids and glycerol, molecules which can
permeate the membranes of the stomach and small intestine for use by
the body. Gastric lipase,
secreted by the stomach lining, has a pH value for optimal activity
around neutrality and would appear, therefore, to be essentially
inactive in the strongly acid environment of the stomach. It is
suggested that this enzyme is more important for infant digestion
since the gastric pH in infancy is much less acid than later in life.
Most lipid digestion in the adult occurs in the upper loop of the
small intestine and is accomplished by a lipase secreted by the
pancreas.
Lipase: The
Missing Enzyme
Lipase: Fats are
the most difficult component of the diet to digest. Fatty foods cause more
indigestion than proteins or starches.
Most Americans have crossed-wires when it comes to
fats. Because of bulging waistlines, most Americans battle between
fat-phobia and fat-craving. The human body is programmed to crave
fats. Without essential fats and fatty nutrients animals and humans
cease to thrive. Omega-3 and omega-6 fats from flaxseed and
cold-water fish were found to be essential for human health by
physiologists in the 1930s.
The American diet is intentionally laden with saturated
fats and hardened hydrogenated fats, leaving about 80% of the
population deficient in the essential fats required for the
maintenance of the human nervous system, the production of hormones
and the control of inflammation.
Foods actually taste better when they contain fats. A
famous fast-food quarter-pound hamburger actually has a saturated fat
content equivalent to 16 pats of butter! The fast-food engineers
really know how to stimulate our taste buds.
It is worth noting here that weight loss is a common
finding among individuals with chronic heart failure. It is evident
that malabsorption of fats is related to heart
failure.
In one study subjects with heart disease had 10 times
more fat in their stool than heart-healthy individuals. This means
those with heart disease weren’t absorbing their fats (Am J
Cardiiology 5: 295, 1960). Yet heart patients are typically placed on
low-fat diets! These individuals were leaner, but not
healthier.
It was not till 1997 that researchers found that
lipase also can help to control LDL cholesterol and is
helpful in stubborn cases of high triglycerides. (Lipds 32: 1147,
1997).
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