The Great Cholesterol Myth (4 page)

BOOK: The Great Cholesterol Myth
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Lowering cholesterol has a very limited benefit in populations other than middle-aged men with a history of heart disease.

By now my conversion from cholesterol true believer to cholesterol skeptic is complete. I still prescribe statins—but only on occasion, and almost exclusively to middle-aged men who’ve already had a first heart attack, coronary interventioin (e.g., bypass, stent, angioplasty), or coronary artery disease.

I’ve come to believe that cholesterol is a minor player in the development of heart disease and that whatever good statin drugs accomplish has very little to do with their cholesterol-lowering ability. (We discuss this at great length in
chapter 6
, “The Statin Scam.”) Statin drugs are anti-inflammatory, and their power to reduce inflammation is much more important than their ability to lower cholesterol. But we can lower inflammation (and the risk for heart disease) with natural supplements, a better diet, and lifestyle changes such as managing stress. Best of all, none of these come with the growing laundry list of troubling symptoms and side effects associated with statin drugs and cholesterol lowering.

LIKE DEAD MEN WALKING

So there you have it. Two individuals with very different journeys arriving at the same conclusion. And because that conclusion may be pretty hard to swallow if you’ve been brainwashed by the cholesterol establishment—and who hasn’t?—it might be helpful to take a moment and talk about a study we alluded to earlier—the Lyon Diet Heart Study.

In the early 1990s, French researchers decided to run an experiment—known as the Lyon Diet Heart Study—to test the effect of different diets on heart disease.
4

They took 605 men and women who were prime candidates for heart attacks. These folks had every risk factor imaginable. All of them had already survived a first heart attack. Their cholesterol levels were through the roof, they smoked, they ate junk food, they didn’t exercise, and they had high levels of stress. People like this give insurance underwriters nightmares. To be frank, these folks were “dead men walking.”

The researchers divided the participants into two groups. The first group was counseled (by the research cardiologist and the dietician during a one-hour session) to eat a Mediterranean-type diet which emhasizes fresh fruit and vegetables, whole grains, legumes, nutes, healthy fats like olive oil, and seafood. The second group was the control group and
received no dietary advice from the investigators but was advised, nonetheless, to follow a
prudent diet
by their attending physicians.

What was this prudent diet, you ask? Pretty much the standard (and, as we shall see, useless) diet that doctors have been recommending for decades: Eat no more than 30 percent of your calories from fat, no more than 10 percent from saturated fat, and no more than 300 mg of cholesterol a day (about the amount in two eggs). So what happened with the study?

Actually, it was stopped.

Why? Because the reduction in heart attacks in the Mediterranean diet group was so pronounced that the researchers decided it was unethical to continue. To be precise, the Mediterranean diet group had a whopping 70 percent reduction in deaths and an even more impressive 76 percent reduction in cardiovascular deaths. What’s more, angina, pulmonary embolism, heart failure, and stroke were also much lower in the intervention group. A huge victory for the Mediterranean diet and a big dunkin’ for the prudent diet.

So what happened to these folks’ cholesterol levels? Gosh, you’d imagine they dropped like crazy, because so few of them were dying of heart disease.

Um, not so much.

Their cholesterol levels
didn’t budge
.

Let’s repeat that one more time: a 76 percent reduction in deaths from heart disease but not a whit of change in cholesterol levels. Neither in their
total
cholesterol levels
nor
in their levels of LDL (the so-called “bad” cholesterol). You’d think this would shake up the cholesterol establishment a bit, wouldn’t you?

Think again. The prestigious
New England Journal of Medicine
refused to publish the study. (It was eventually published in another highly regarded medical journal,
The Lancet.
) We have a hunch that the reason the
New England Journal of Medicine
didn’t publish the study was precisely because there was no difference in cholesterol levels between the two groups of people, the ones who did so well and the ones who did not. The American medical establishment is so firmly locked into the notion that cholesterol and fat cause heart disease that any inconvenient evidence to the contrary—and there is a massive amount of it, as you will soon find out—has to be ignored or explained away.

Lower heart disease rates? And no movement in cholesterol numbers?

Something has to be wrong!

Actually something
was
wrong, but not with the study. What was—and is—wrong is the blind belief that cholesterol simply makes a huge difference.

An Inconvenient Fact

Not convinced? Fast-forward to a drug study completed in 2006, the widely publicized ENHANCE trial.
5
If you were following the news in 2008 you couldn’t have missed this one, because it made the front pages of the newspapers and all of the television news shows. Here’s what happened.

A combination cholesterol-lowering medication called Vytorin had been the subject of a huge research project, the results of which were finally coming to light and receiving an enormous amount of negative attention. One of the many reasons for this negative
attention was the fact that the companies jointly making the drug (Merck and Schering-Plough, who’ve since merged) waited almost two years before releasing it.

No wonder. The results stunk. Which was the
other
reason this drug test made the front pages.

The new “wonder” drug lowered cholesterol just fine. In fact, it lowered it
better
than a standard statin drug. So you’d think everyone would be jumping for joy, right? Lower cholesterol, lower heart disease, let’s have a party for the shareholders.

Um, not quite. Although the people taking Vytorin saw their cholesterol levels plummet, they actually had
more
plaque growth than the people taking the standard cholesterol drug. The patients on Vytorin had almost twice as great an increase in the thickness of their arterial walls, a result you definitely don’t want to see if you’re trying to prevent heart disease.

So their cholesterol was wonderfully lowered and their risk for heart disease went up—shades of “the operation was a success but the patient died.”

There are countless other examples, many of which we’ll discuss later on, but let’s just mention one of them right now. It’s known as the Nurses’ Health Study, and it’s one of the longest-running studies of diet and disease ever undertaken. Conducted by Harvard University, the study has followed more than 120,000 females since the mid-1970s to determine risk factors for cancer and heart disease.
6
In an exhaustive analysis of 84,129 of these women, published in the
New England Journal of Medicine
,
7
five factors were identified that significantly lowered the risk for heart disease. In fact, wrote the authors, “Eighty-two percent of coronary events in the study . . . could be attributed to lack of adherence to (these five factors).”

Are you ready for the five factors?

1. Don’t smoke.

2. Drink alcohol in moderation.

3. Engage in moderate-to-vigorous exercise for at least half an hour a day on average.

4. Maintain a healthy weight (BMI under 25).

5. Eat a wholesome, low-glycemic (low-sugar) diet with plenty of omega-3 fats and fiber.

Wait, didn’t they miss something? Where’s the part about lowering cholesterol?

Oh. It’s not there. Never mind.

Of course, there’s not roughly $30 billion plus a year to be made peddling that advice (a number that represents the gross revenue from statin drugs alone), and popping a pill is a lot easier than changing your lifestyle, but there it is. The inconvenient fact that lowering cholesterol has almost
no effect
on extending life is simply ignored by the special interests that profit enormously from keeping you in the dark.

As the writer Upton Sinclair said, “It is very difficult to get a man to understand something, when his salary depends upon his not understanding it.”

CHAPTER 2

“CHOLESTEROL IS HARMLESS!”

NOW LET’S TALK ABOUT YOU FOR A MOMENT.

Unless you’re just an information junkie, there’s a good chance that you’re reading this book because you have something at stake here. Let us guess: You’re concerned about
your
cholesterol.

Maybe you’re a woman whose doctor has read you the riot act because your cholesterol is approaching 300 mg/dL, and your doc has convinced you that you’ll drop dead of a heart attack if you don’t go on medication right away.

Maybe you’re a middle-aged man who has already had a heart attack, and your doctor is adamant about putting you on a cholesterol-lowering drug.

Or maybe you’re a fit guy in your sixties whose cholesterol is 240 mg/dL and whose doctor is “worried” about that number.

However, only
one
of the three hypothetical cases listed above has any business being on a cholesterol-lowering drug. Can you guess which one? Don’t worry: By the time you finish this book, you’ll not only know the answer, you’ll also know a heck of a lot more about cholesterol than most doctors in America. And, no, we don’t make that statement lightly.

CHOLESTEROL BASICS

Cholesterol is a waxy substance—technically a
sterol
—that is an important constituent of cell membranes. The vast majority of cholesterol in the body is made in the liver, while the rest is absorbed from the diet.

Cholesterol is the basic raw material that your body uses to make vitamin D; sex hormones such as estrogen, progesterone, and testosterone; and the bile acids needed for digestion. Cholesterol travels in particles called lipoproteins, the most common of which are high-density lipoproteins (HDL) and low-density lipoproteins (LDL).

Below we address the long-held, conventional views on cholesterol basics that we believe to be outdated.

WHAT IS HDL?

Old School

HDL is considered “good” cholesterol because it helps remove so-called “bad” cholesterol, LDL. When measured, HDL levels should be as high as possible, preferably 60 milligrams per deciliter of blood (mg/dL) and above. Maintaining a healthy weight, physical activity, and a diet that includes healthy fats like olive oil are believed to keep HDL levels high.

New School

HDL is much more tightly controlled by genetics than LDL. A 2011 study from the National Institutes of Health, AIM-HIGH, found that raising HDL did nothing to protect against heart attacks, strokes, or death. And all HDL is not the same. HDL-2 particles are large and buoyant and the most protective. HDL-3 particles, on the other hand, are small and dense and may be inflammatory. HDL-2 is anti-inflammatory and anti-atherogenic (atherosclerosis being the condition in which an artery wall thickens from the accumulation of fatty materials, called plaque, induced by inflammation, inhibiting blood flow from the heart). HDL-3, on the other hand, is poorly understood. You want to have higher levels of HDL-2 than HDL-3.

The “New School” generally agrees that higher levels of HDL are desirable, but research is concentrating on the
function
of HDL subtypes rather than the total amount. Daniel Rader, M.D., director of preventive cardiology at the University of Pennsylvania, wrote in the
New England
Journal of Medicine
, “Recent scientific findings have directed increasing interest toward the concept that measures of the function of HDL, rather than simply its level in the blood, might be more important to assessing cardiovascular risk and evaluating new HDL-targeting therapies.”

WHAT IS LDL?

Old School

LDL is “bad” cholesterol because it can build up in the arteries, impeding blood flow. Its levels should be kept low. Current standards are 100 to 129 mg/dL, with lower than 100 being the target for those at risk for heart disease, and lower than 70 being the target for people at very high risk. Too much saturated fat in the diet, inactivity, and being overweight are considered to raise LDL levels.

New School

All LDL is not the same. LDL-A is a buoyant, fluffy molecule that does no harm whatsoever as long as it is not damaged by oxidation (a process caused by free radicals that enables cholesterol to form plaque). LDL-B is a small, hard, dense, molecule that promotes atherosclerosis. A pattern of high LDL-A is the most beneficial. Blood tests today can also measure the number of LDL-A and LDL-B particles.

The most important cholesterol particle of all, which conventional tests do not focus on, is Lp(a). Lp(a) is a very small, highly inflammatory particle that is thrombogenic (blood clotting). Dr. Sinatra calls it “the alpha wolf” of cholesterol particles. In a healthy body, low Lp(a) levels aren’t much of a problem. Lp(a) circulates and carries out repair and restoration work on damaged blood vessels. However, the more repairs you need on your arteries, the more Lp(a) is utilized. Lp(a) concentrates at the site of damage, binds with a couple of amino acids within the wall of a damaged blood vessel, dumps its LDL cargo, and starts to promote the deposition of oxidized LDL into the wall, leading to more inflammation and ultimately to plaque.

Also, Lp(a) promotes the formation of blood clots on top of the newly formed plaque, which narrows the blood vessels further.

HOW CHOLESTEROL IS MEASURED

Old School

A standard blood test will tell you your total cholesterol level and your HDL and LDL levels.

New School

Measure cholesterol with the newer particle tests, which tell you how much of your LDL is type A and how much of your LDL is type B (see
chapter 9
for more information). Measure the
number
of actual particles, and the amount of the potentially dangerous Lp(a). That is the only information that matters.

DIETARY ADVICE

Old School

Eat less 300 mg of cholesterol a day and eat less than 10 percent of calories as saturated fat.

New School

According to the Framingham Heart Study, people who consumed the most cholesterol in their diets did not have any higher blood cholesterol levels than those who consumed the least amount. The effect of dietary cholesterol on blood (serum) cholesterol is very variable and individual, and for most people—though not all—the effect of dietary cholesterol on serum cholesterol is insignificant.

In any case, because cholesterol is not as an important risk factor for heart disease as once believed, it doesn’t matter very much. Saturated fat raises cholesterol, but it raises overall HDL cholesterol and the
good
part of LDL cholesterol (LDL-A) far more than it raises the bad part of LDL cholesterol (LDL-B). There is no evidence that supports a
direct
relationship between saturated fat and heart disease.

RELATIONSHIP TO HEART DISEASE

Old School

High levels of cholesterol are an important risk factor for heart disease because cholesterol builds up in the arteries, inhibiting blood flow from the heart.

New School

Cholesterol is a relatively minor player in heart disease and a poor predictor of heart attacks. More than half of all people who are hospitalized with heart attacks have perfectly normal cholesterol levels.

BOOK: The Great Cholesterol Myth
13.45Mb size Format: txt, pdf, ePub
ads

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