The truth about cholesterol and heart diseases |
cholesterol is a wax-like fatty substance found in
almost every cell of your body. You need cholesterol to make hormones and
vitamin D, digest your foods, protect your nerves and for the production of
cell membranes.
Although it has been painted black, it is essential
to your health. Your liver manufactures most of the cholesterol you require
from the nutrients in your food.
Levels of cholesterol are not higher in fatty meats
or lower in lean meats. Like your body cells, the cells of all mammals contain
cholesterol. Fat cells contain as much cholesterol as other cells in the meat.
All meat averages about 25 milligrams of cholesterol per 1 ounce, including
beef, pork and poultry.1
Dietary (preformed cholesterol) absorption rates
also vary between 20 and 60 percent in individuals. This may explain why eating
cholesterol affects cholesterol levels differently in different people.
Cholesterol
Ratios Are More Important Than Single Numbers
You may be following your cholesterol
numbers in terms of the
"good" cholesterol (HDL) or the "bad" cholesterol (LDL).
But the best way to interpret your cholesterol numbers is to understand your
cholesterol ratio.
To say that all low-density lipoprotein (LDL)
molecules are bad is an oversimplification of our understanding of cholesterol.
Through the use of new technology to test the size
of lipoprotein particles, scientists have identified which sizes are more
closely related to heart disease. The smaller sized LDL molecules hold the
highest risk for cardiovascular disease (CVD).
Small, dense LDL particles can squeeze between the
cells of your arterial lining, the so-called "gap junction" of the
endothelium, where they can get stuck and potentially oxidize, turn rancid and
cause inflammation and plaque formation. They also have a relationship to other
metabolic abnormalities.
Large epidemiological studies have found people
with predominantly small LDL particles are at increased risk
for CVD. Even more interesting is the research demonstrating eating
saturated fats increases the size of your small LDL molecules to the larger
size and reduces your overall risk of CVD. The importance of measuring LDL
cholesterol through common blood testing has now decreased in value, to the
point the American Heart Association (AHA) no longer recommends using LDL
cholesterol as a guide in treating the risk for CVD or prescribing statin drugs
Instead, a better predictor is the ratio between
your high-density lipoproteins (HDL) and total cholesterol. HDL is an important
factor in the fight against heart disease. Your ratio between HDL and total
cholesterol (or HDL divided by your total cholesterol, multiplied by 100)
should ideally be above 24 percent.
Triglycerides are another type of cholesterol
formed in your body with excess blood sugar from the metabolism of
carbohydrates. They are a significant risk factor in the development of heart
disease. Your triglyceride to HDL ratio (triglycerides divided by HDL,
multiplied by 100) should ideally be below 2 percent.
Cholesterol
Not a Trigger for Heart Disease
In the two videos above, you'll discover some of
the history behind why science has clung to the belief that cholesterol is
responsible for heart disease, and why they have been wrong.
Recent research9 has again confirmed that high cholesterol is not linked
with heart disease in the elderly, prompting the researchers to conclude that
reducing cholesterol levels with statin drugs is "a waste of time."
Unfortunately, statins are not innocuous drugs, making their use more than just
a waste of time.
The research reviewed studies involving nearly
70,000 people to look for a link between LDL cholesterol and premature death in
those over 60. Contrary to conventional wisdom, they found 92 percent of people
with high cholesterol levels actually lived longer than those who kept their
levels at or below "normal."
They concluded the results were "inconsistent
with the cholesterol hypothesis (i.e., that cholesterol, particularly LDL-C, is
inherently atherogenic)."
They believe their analysis of the research
provides a reason to question the cholesterol hypothesis and a "rationale
for reevaluation of the guidelines recommending pharmacological reduction of
LDL-C in the elderly as a component of cardiovascular disease prevention
strategies."11
While termed a "waste of time" by
researchers, statins carry with them a list of over 200 side effects and
clinical challenges. Some of these include:
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Increased risk of diabetes
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Acute liver disease
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Muscle pain, tenderness or weakness
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Rhabdomyolysis
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Acute kidney failure
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Endocrine dysfunction
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Central nervous system toxicity
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Abdominal pain
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Constipation
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Diarrhea
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Dizziness
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Headache
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Skin rash
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Nerve damage
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Reduced muscle and nervous system coordination
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Depletes your body of essential minerals
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Memory loss
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Before taking medications with such a significant
side effect profile, it's important to weigh the risks and benefits of the
drug.
In this case, research shows that statins used for
primary prevention, or lowering the risk of a cardiovascular event (heart
attack or stroke) over 10 years, has a success rate of just 7 in 1,000 events
prevented. Put another way, in 99.3 percent of patients there's no appreciable
benefit.
Ultimately, statins increase your risk of other
dangerous health conditions, while not delivering on the promise to reduce your
risk of heart disease or other cardiovascular events. More than a waste of
time, they are a danger to your health.
Heart Disease
Risk Factors
If saturated fats and high cholesterol levels are
not a cause for rising heart disease rates, what is? The numbers of heart
attacks and strokes began to rise dramatically in the 1950s, after research was
published blaming heart disease on saturated fats.
One correlation, drawn in recent literature, is
between the increased amount of carbohydrates eaten when saturated fats are
removed from the diet, and the rise in CVD. An increase in carbohydrates
will raise your triglyceride level, one risk factor for CVD.
Besides cutting down on net carbs (total
carbohydrates minus fiber), another dietary factor that can help decrease your
risk is to increase your antioxidant intake. For example, resveratrol, found in
grape skins, has been shown to change your gut microbiome and protect against
CVD. Other risk factors include a lack of exercise and smoking, both of which impact the oxygenation
of your heart muscle and subsequent damage leading to heart disease. Chemicals
in tobacco are associated with damage to your blood vessels and heart, and
increase the risk of plaque formation.22
Your weight, and more specifically your waist circumference, is another indicator or
risk factor for heart disease. Although interrelated, waist circumference is an
independent predictor and useful whether you are at your normal body mass index
(BMI) or overweight. Abdominal fat in adults is associated with type 2
diabetes, high blood pressure and CVD
What Is a Silent Heart Attack?
CVD continues to be the leading cause of death in
industrialized nations, followed closely by cancer. Chronic lower respiratory
diseases are a distant third, at only 25 percent of the total number of deaths
from heart disease. (Officially, that is. Unofficially, medical errors and
prescription drugs are actually the third leading killer in the U.S.)
High blood pressure is a leading cause of heart
disease and often called the silent killer, since unless you are tested for the
condition there are no clinical symptoms. There are also heart attacks that
occur silently, causing damage to your heart muscle and increasing your risk of
death with your next heart attack. To measure the incidence of silent heart
attacks, researchers studied almost 9,500
middle-aged adults, some for more than 13 years. During that time, researchers
noted men had more silent attacks, but these attacks killed more women. Silent
heart attacks are usually discovered during physical examination at a later
time since people don't associate any symptoms they may have with a heart
attack. Women who have had a silent heart attack are 58 percent more likely to
die than women who have not had a heart attack, but the mortality rate for men
suffering a silent heart attack is only 23 percent higher than men without a
heart attack.
The study found that nearly half of all heart
attacks may be silent and since people don't know they had a heart attack, they
don't seek the care needed to prevent another one. Researchers caution that once
discovered, those who have had a silent heart attack should be treated as
aggressively as those who had a traditional attack with symptoms.
What Can You Do?
There are several modifiable risk factors you can
effectively change to make a difference in your risk of suffering heart disease
or a heart attack. Reducing your risk factors require changes to your
lifestyle, such as the following:
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Reduce your waist circumference to within
normal limits
Abdominal
fat is different from being generally overweight. You can be within normal
limits for weight but still carry abdominal fat, increasing your risk of
metabolic stress and heart disease. Reducing belly fat requires more than
just reducing calories or increasing exercise. In my previous articles titled
"4 Ways to
Shed Belly Fat" and "Cut Down on
Carbs to Reduce Body Fat" I outline several strategies you
can use.
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Reduce or eliminate smoking
Smoking
is a challenging addiction to break. However, it is also a significant risk
factor for heart disease. Drugs used
to stop smoking have also been linked to an increased risk of
suicide. Instead, make a plan, work with a support group, include an exercise
program and understand you may stumble once in a while. However, just because
you smoke one or two, doesn't mean you have to go back to your old habit.
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Reduce your net carbs to
20 to 30 percent of your total caloric intake
Net
carbs are equal to the number of grams of carbohydrates you've eaten during
the day minus the number of grams of fiber. If you generally eat 1,500
calories per day, you may want to limit your net carbs to between 300 and 450
calories each day.
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Eat healthy saturated
fats
Substitute healthy
saturated fats in your diet for the carbs you are losing.
These may increase the size of your LDL cholesterol and protect you against
heart disease. They include raw, organic nuts and seeds, avocadoes, pastured
organic eggs, grass-fed meat and virgin coconut oil.
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Maintain your blood
pressure within normal limits
High
blood pressure is a silent killer. Maintain yours with nutritional strategies,
controlling your fructose and carbohydrate intake, getting outdoor exercise
and considering several supplements I discuss in "Foundational
Lifestyle Strategies to Maintain Healthy Blood Pressure."
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Get at least 30 minutes
of exercise each day
A
regular exercise routine is one way to improve your emotional, physical and
psychological health. It improves your sleep, reduces your risk of heart
disease and improves your resistance to infection. Peak Fitness is an
exercise program I developed to address the health needs of my body without
the damaging effects of hours of cardiovascular work.
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Get up and move around
during the day
Even if you exercise an
hour a day, six days a week, if you sit behind a desk all day you eliminate
the benefits to your heart and health. I recommend standing up as much as
possible. I've cut my sitting down to about an hour a day, but aiming for a
max of three hours of sitting a day is a worthy goal. A stand-up desk is a
great investment if you have an office job.
Also
make it a point to walk more. The idea is to keep your body moving throughout
the day. This can also help increase your productivity and creativity, and
may even be helpful if you're struggling with back pain, like I did.
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Improve your gut
microbiome
Keep your
gut microbiome healthy and flourishing to reduce your risk of
heart disease and improve your cholesterol ratio. Include fermented
vegetables in your daily nutritional plan, eat 50 grams of fiber for every
1,000 calories you ingest and take antibiotics only when absolutely
necessary.
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