Flaxseeds
Flax seeds are a
source of omega 3 essential fatty
acids, soluble fiber, and lignans,
which help to balance out estrogen
levels. The role of flax seeds in
atherosclerosis is related to its
ability to reduce platelet
aggregation, lower blood
cholesterol, and process excess
bile acids via its fiber
component.
In a study
utilizing laboratory animals,
supplementation with flax seeds
seemed to decrease hypercholesterolemic
atherosclerosis without decreasing
serum cholesterol, implicating
flax seeds as beneficial
supplement for lowering heart
attack and stroke risk related to
hypercholesterolemia. [4]
Other research also
validates the lipid lowering
effects of flax seeds. In a study
with 15 subjects with high blood
cholesterol levels,
supplementation with flax seeds
decreased total and LDL-
cholesterol by approximately 10%, as well as significantly reducing
platelet aggregation. In
addition, participants maintained
positive HDL cholesterol and
triglyceride levels. [5]
Fish Oil (EPA/DHA)
Essential fatty
acids, such as EPA and DHA, are
beneficial for a number of
reasons. They play a critical role
in body function and structure,
such as regulating steroid
production and hormone synthesis,
dilation and constriction of blood
vessels, preventing blood cells
from clumping together (clotting), and are primary constituents of
cellular membranes. [6]
Many studies
implicate the cholesterol lowering
effects of fish oils. Questions
arise as to whether one should
supplement with fish oil or just
consume more fish in the diet. Research suggests that increasing
fish in the diet may not have a
similar protective effect to that
oil supplementation, but both
showed a positive response in
preventing atherosclerotic plaque. A study involving 25 men over a
five-week period of time showed
that both fish oil and the same
amount of oil ingested in whole
fish form, lowered triglycerides
and raised HDL cholesterol
levels. [7]
Vitamin E
Vitamin E is well
known for is antioxidant capacity
and plays a major role in the
prevention of heart disease and
strokes. It has the ability to
reduce LDL cholesterol oxidation,
decrease excessive amounts of
platelet aggregation, and provide
an increase in HDL
cholesterol and fibrinolytic activity. [8]
A study involving
156 men, ages 40 to 59 with a
previous history of coronary
bypass graft surgery, exhibited
less adverse symptoms of coronary
artery progression when
supplementing with 100 IU or more
of vitamin E. This finding
was compared to the another test group which was supplemented with
less than 100 IE of vitamin E. [9]
Fiber
Water-soluble gels
and mucilaginous fibers, such as oat
bran, can decrease lipid content in
the blood by increasing its removal
through the bowel, and preventing
its manufacture in the liver. Whole oat products are more
beneficial in decreasing total
cholesterol and LDL cholesterol
levels than consuming products
with oat bran and beta-glucan
fiber combined. [10]
Psyllium
Blond psyllium also
shows effectiveness in reducing
cholesterol levels in those with
high cholesterol levels. With
supplementation, it can reduce
total cholesterol levels between
3-14%, LDL cholesterol by 5-10%,
and apolipoprotein B by 8.8%. After extended treatment, if
may
also significantly reduce the LDL:
HDL ratios. [11,
12]
Niacin
Niacin, or vitamin
B3, functions in the body as a
component of the compounds NAD and
NADP, both of which are involved in over 50
chemical reactions throughout the
body. Niacin plays an important
role in fat, cholesterol and
carbohydrate metabolism, hormone
production, and energy production.
Niacin's lipid
lowering ability translates into a
reduction of LDL and VLDL
cholesterol blood triglycerides
and lipoprotein A. In
addition, it has also
been shown to increase HDL cholesterol. [13] The benefit of this supplement
seems to be dose dependent; higher
doses have more of a profound
effect, but low dose has shown to
be of some value as well. It is
well known that niacin is not
without side effects. The most
well known reactions being skin flushing, gastric irritation, nausea, and
possible liver damage.
Inositol
hexaniacinate is the safest form
of niacin available, and greatly
reduces the ill effects of niacin;
but because it is metabolized to
niacin, there is still the risk of
mild side effects. [14] Before supplementing with niacin,
one should consult with their
physician due to the probability
of developing serious
side effects with an elevated dosage.
Guggul (Commiphora
mukul)
Guggul is an Ayurvedic remedy made
from the gum resin of the
Commiphora mukul tree native to
India. Within the extracts,
compounds such as the ketonic
steroids, Z-guggulsterone and E-guggulsterone
are found. These compounds
are suspected to inhibit the
synthesis of cholesterol in the
liver and also provide for an
antioxidant effect on lipids. [15,
16]
Studies involving
both animals and humans have
validated the theory that guggul has a lipid
lowering effect. This effect
is thought to be related
to its ability to influence
cholesterol balance by acting as a
bile acid receptor agonist. [17] Although some research is
contradictory to the positive
effects of guggul,
this herb has been used for over
2000 years for hyperlipidemia. [18]
Garlic (Allium
Sativum)
Garlic has been
used effectively for its purported medicinal
properties for centuries around
the world. The active compound in
garlic, allicin, is released from
the cloves when crushed. Garlic
has been touted for its
cardiovascular protective effects,
and has been shown to be effective
at
reducing the risk of heart disease
and stoke, by lowering total
cholesterol, LDL cholesterol, and
triglycerides, without adversely affecting HDL Cholesterol. [19,
20] Garlic also increases fibrolytic
activity and platelet aggregation
through the breakdown products of
allicin. This is extremely important in preventing the
formation of atherosclerotic
plaques. [21]
Red Yeast Rice
Red Rice Yeast is
produced by the fermentation
process of rice with Monascus
purpureus yeast. The product is
produced in a controlled
environment to increase the amount
of mevinic acids, which in essence, block the metabolism of
cholesterol. The principle active
constituent of red yeast is mevinic acid, in which lovastatin
is found. These compounds act as
HMG-CoA reductase inhibitors; or
in other words, they act to block
the biosynthesis of cholesterol. [22]
In a study
involving 83 subjects with
hyperlipidemia, supplementation
with red yeast rice significantly
reduced total cholesterol, LDL
cholesterol, and total
triacylglycerol concentrations
without significantly altering HDL
cholesterol levels. Researchers
concluded that due to these
results, red rice yeast provides a
food-based approach to treating hyperlipidemia. [23]
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