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Chapter 7: Beta-Sitosterol
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If there was
only one supplement you could take to normalize your cholesterol it should be
beta-sitosterol. 300 to 600 mg doses every day will do wonders for you. If you
have a more serious problem you can take three capsules a day or 900 mg, but
only for a year. Beta-sitosterol is the safest, most studied, most proven, most
effective single way known to lower total and LDL cholesterol. The studies on
this in the medical journals actually go back 50 years, yet most people have
never even heard of it. The published human research is just overwhelming here
and every year more studies are done on plant sterols.
Upjohn Pharmaceuticals tried to make a
prescription analog (chemical relative) of it decades ago for lowering
chol-esterol but did not succeed - the natural molecule works best. The
scientific community has been well aware of it and clinics around the world have
done extensive studies on both humans and animals including gall bladder, bile
and liver functions since these are all part of the cholesterol metabolism. The
major mechanism that seems to be effective is simply by preventing the dietary
cholesterol from being absorbed in the intestines where fat is digested. Another
way this seems to work is by increasing the flow of bile acids, which binds the
cholesterol in the digestive track and excretes it in the feces. There are just
too many studies to count so I’ve picked a few of the most interesting human
studies to relate here.
What is beta-sitosterol?
A phytosterol or plant alcohol that is literally in every vegetable we eat. We
already eat this every day but we just don’t get enough of it. The typical
American is estimated to eat only 200-400 mg a day, while vegetarians probably
eat twice this much. This is surely one of the many reasons vegetarians are
healthier and live longer. Actually the term “beta-sitosterol” in commerce
refers to the natural combination of beta-sitosterol, stigmasterol, campesterol
and brassicasterol, as this is how they are made by nature in plants. There are
no magic foods with high levels of phytosterols, but they can be inexpensively
extracted from sugar cane pulp, soybeans and pine oil.
At McGill University in
Montreal (Can. J. Physiol. Pharmacol. v. 75, 1997) doctors did a review of the
literature on beta-sitosterol and cholesterol metabolism. They researched in
detail 18 major studies that used sitosterols to lower cholesterol and
triglycerides. They concluded, “addition to diet of phytosterols represents an
effective means of improving circulating lipid profiles to reduce risk of
coronary heart disease.” This study came complete with forty high quality
references and left no doubt about the effectiveness of phytosterols on humans.
Also at McGill University (Metabolism Clinic Experiments v. 47, 1998) patients
on a fixed diet were given sterols from pine oil for a mere ten days in a
strict, randomized crossover study. This was not a low fat or low cholesterol
diet at all. They successfully lowered both their total cholesterol and LDL
levels in this short term placebo controlled experiment. They concluded, “These
results demonstrate the short term efficacy of
pine oil plant sterols as cholesterol lowering agents.”
A very
interesting study was done at the Center for Human Nutrition in France (Ann.
Nutr. Metab. v. 39, 1995) in that healthy people with normal cholesterol levels
were given beta- sitosterol to see if their normal levels could be lowered even
further. We always think of studies as using unhealthy people with pathological
cholesterol levels given supplements to make them normal again. Amazingly enough
the healthy people lowered their normal cholesterol levels even more with no
change in diet or exercise. In fact, they were a full 10% lower in only a
month. This kind of effect is really fascinating. They said, “The present
results may be of great interest in the prevention of high cholesterol
diet-associated risks, especially in the prevention of cardiovascular diseases”.
Since beta-sitosterol was so effective for people who didn’t even need it, think
what it will do for those people who do need to lower their blood lipids. They
concluded, “These findings suggest that a significant lowering of plasma total
and LDL cholesterol can be effected by a modest dietary intake of soybean
phytosterols.”
A good study was
done at the Wageningen Agricultural Institute in the Netherlands, the same
clinic that did so much good research on trans fatty acids (Am. J. Clin. Nutr.
v. 72, 2000). They gave men and women a margarine containing plant sterols and
got very significant reductions in cholesterol as well as lower LDL levels in
only three weeks. Why a clinic would give margarine to people after studying the
negative effects of hydrogenated oils is another matter. Again, these were
healthy subjects with normal cholesterol levels, yet they still got great
benefits very quickly with no change in diet or exercise.
At Uppsala
University in Sweden (Eur. Heart J. Supp. 1, 1999) the doctors wanted to give
the volunteers the phytosterols in conjunction with a cholesterol lowering diet
to see the results of a more comprehensive lifestyle program. The results were
really impressive in that the men and women lowered total cholesterol a full 15%
and LDL cholesterol a full 19% in less than a month. The shows the very dramatic
results you can get with just adding some reasonable dietary changes even
without any exercise program at all.
Smart doctors
have learned that adding these phytosterols to their usual prescription “statin”
drugs makes them far more effective and the toxic dosages can be lowered. This
is NOT my advice at all since the point of this book is to show you how to lower
your blood fats naturally without drugs, but it does make a valid point
certainly. At Grosshadern Clinic in Munich (Curr. Ther. Res. 57, 1996) doctors
found double the cholesterol lowering benefits when sterols were added to the
usual regimen of lovastatin. These statin drugs are so dangerous that liver
function tests have to be given periodically to make sure the liver still
functions reasonably. People with liver problems cannot take these drugs at all,
but can and should, in my opinion, use supplements like beta-sitosterol. Some
people prefer to use prescription drugs even though there are natural
alternatives available that are as much or more effective, certainly much safer
and less expensive. Such people should definitely add beta-sitosterol to their
regimen of statin drugs along with the other supplements discussed in this book.
At the University
of British Columbia at their St. Paul’s Hospital (American Journal of Medicine,
v. 107 (1999) a very impressive review was done complete with 86 references of
using plant sterols to lower total cholesterol and LDL. They said of the recent
research, “ In 16 recently published human studies that used phytosterols to
decrease plasma cholesterol levels in a total of 590 subjects, phytosterol
therapy was accompanied by an average 10% decrease in total cholesterol and 13%
decrease in LDL cholesterol levels.” This is the best review to date and should
convince anyone of the effectiveness of sterols over drugs.
At the
University of Kagawa in Tokyo two studies were done. The first was done on
healthy young men who were given plant sterols for only five days. In this short
time their cholesterol levels fell measurably (Joshi Eiyo Daigaku Kiyo 14,
1983). The second study was done on healthy young women (same journal 15, 1984
p. 11-18) again giving them plant sterols for only five days. “Administration of
phytosterol (mainly sitosterol) increased the output of fecal cholesterol.”
These were all healthy young Japanese people eating a traditional low-fat diet
who did not have a cholesterol problem to begin with, yet they received
measurable results in only five days.
At the
University of California in San Diego men were isolated in a hospital ward and
fed 500 mg of cholesterol and then beta-sitosterol supplements (American Journal
of Clinical Nutrition 35, 1982). This resulted in a 42% decrease in cholesterol
absorption in the intestines. They said, “Evidently, the judicious addition of
beta-sitosterol to meals containing cholesterol rich foods will result in a
decrease in cholesterol absorption with a consequent decrease in plasma
cholesterol.”
The University
of Helsinki took a big interest in lowering cholesterol with plant sterol
therapy back in 1988. The first study (Clinical Chimica Acta 178, p. 41-9)
studied familial (genetic) hypercholesteremia. The higher the sterol levels they
found in the patients blood the more cholesterol was excreted rather than
absorbed. The second study was in 1989 (Metabolism Clinical Experiments 38, p.
136-40). Men were studied again for blood levels of sterols and they found the
higher the levels the more cholesterol was excreted successfully. The third
study in 1994 (American Journal of Clinical Nutrition 59, p. 1338-46) studied
vegetarians who eat twice as many plant sterols as normal people. They showed
one reason vegetarians have lower cholesterol levels besides the food they eat
is the efficiency of their cholesterol excretion due to their intakes of plant
sterols. In the last study in 1999 (Current Opinion Lipidology 10, p. 9-14) they
said, “Plant sterols may be useful for the treatment of hyper-cholesteremia…they
may have a potent cholesterol lowering effect as shown in normal and
hypercholesteremic men and women with and without coronary heart disease and
diabetes mellitus.”
The best published review of
all was from the University of British Columbia (American Journal of Medicine v.
107, 1999). This included a full 86 references, and went over sixteen
different human studies using plant sterols to lower cholesterol and
triglycerides since 1951. “In sixteen recently published human studies that used
phytosterols to decrease plasma cholesterol levels in a total of 590 subjects,
phytosterol therapy was accompanied by an average 10% decrease in total
cholesterol and 13% decrease in LDL cholesterol.” They found this worked best
with high-fat diets; the worse the diet the more results the researchers got.
This is the best review to date.
At the University of Calgary
the researchers found (Can. J. Cardiol. v. 17, 2001), “…it is clear that
phytosterols, when added to a prudent diet, will lower serum total and LDL
cholesterol. Numerous well designed studies have documented the beneficial
actions of these phytosterols on serum cholesterol.” They point out that either
sterols or stanols are both effective. Their estimate is that most Westerners
eat less than 300 mg of plant sterols a day which is in agreement with other
researchers.
At Washington University in
St. Louis (Am. J. Clin. Nutr. v. 77, 2003) plant sterols from wheat germ were
used in muffins on patients. “The present study shows that phytosterols
intrinsic to wheat germ are biologically active and have a prominent role in
reducing cholesterol absorption.”
We could go on
all day with studies like this from such well known clinics and hospitals as the
University of Hamburg, University of Oregon, Johns Hopkins University,
Rockefeller University, and others around the world. The research is so
extensive and wide ranging over the last 30 years that it is hard to find and
count all the studies. How something so studied, proven, effective and well
known to the scientific and medical community has stayed outside of public
knowledge is hard to believe. You will notice that the expensive, prescription,
patented and very profitable drugs have been heavily advertised and promoted and
are best sellers. There is just no profit in a natural, unpatentable,
non-prescription plant extract you can get from sugar cane pulp. If you check
vitamin catalogs it still is not easy to find good beta-sitosterol supplements
with realistic amounts of sterols. One heavily advertised brand that sells for a
high price has only 60 capsules containing a mere 30 mg apiece. You would
literally have to take 10 capsules a day to get the benefits you need. You can
find brands containing 300 mg with 60 capsules inexpensively if you look around
or search the Internet under “beta-sitosterol”.
Many studies
have been done in other areas of illness that suggest beta-sitosterol may have
great potential in other areas such as prostate disease, diabetes, blood
clotting, ulcers, cancer prevention, tumors, immunity, inflammation and other
conditions. These studies have been conducted at such institutions as the State
University of New York, National Institutes of Health, University of Japan,
University of Valencia, University of Stellengbosch and other prestigious
clinics who are willing to study an inexpensive natural plant extract that
cannot be patented or sold be prescription. You will see more research and more
benefits for beta-sitosterol every year.
One last word
about the popular margarines that contain these plant sterols and stanols. This
is a very expensive and poor way to take them. Adding all that fat to your diet
is not what you are trying to do. Some of these margarines are made with
hydrogenated oils. Why sell a “health” supplement full of saturated and/or
synthetic hydrogenated fat to clog your arteries? Obviously the least expensive
and most practical way is to take capsules or tablets.
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