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When it comes to matters of the heart, the statistics are dire: Cardiovascular disease is the top cause of death in the United States and around the globe. Americans spend more than $300 billion annually on the costs of heart disease, stroke, and other cardiovascular diseases. And experts say the situation will only worsen as baby boomers age.
Heart Disease in Today’s Age
We’ve known for years that cardiovascular disease is largely preventable, yet its incidence has skyrocketed even as we have dutifully heeded the advice of leading professional organizations like the American Heart Association, cutting back on dietary fat and increasing our use of cholesterol-lowering drugs.
It’s no wonder, then, that many observers are making alarming predictions about the future of heart health. “Unless current trends are halted or reversed,” a 2004 World Health Organization report noted, “over a billion people will die from cardiovascular diseases in the first half of the 21st century.”
Among more progressive-minded health practitioners, however, it’s not all gloom and doom. Armed with a different approach to heart disease, many forward-thinking doctors are looking beyond overall cholesterol numbers to prevent — or even reverse — heart disease.
“We’re missing the big picture, which includes looking at more than someone’s total cholesterol,” says Mimi Guarneri, MD, FACC, a functional medicine cardiologist in La Jolla, Calif., and president of the Academy of Integrative Health and Medicine. “After all, studies have shown that 80 percent of the time, people who have heart attacks have the same total cholesterol as people who never have a heart attack.
“So, that takes us back to what really causes cardiovascular disease — or chronic disease of the vascular system — and it’s multifactorial: It’s the food choices you make. It’s the toxins you’re exposed to. It’s the way you respond to stress and tension. It’s all of these things. But the big misnomer is, ‘Oh, it’s just my cholesterol.’”
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4 Myths About Cholesterol (and Heart Disease Facts)
Guarneri is not alone in her view. There are a growing number of experts taking a new approach to preventing and treating cardiovascular disease by looking at multiple contributing factors. We asked a handful of them to address the primary myths about heart health — and to explain the progressive protocols that are helping to create a new paradigm of heart care.
Myth #1: High cholesterol is the cause of cardiovascular disease.
Since the 1950s, when a scientist named Ancel Keys cherry-picked data to support his hypothesis that saturated fat was the main driver of heart disease, we have blamed cholesterol for all our cardiovascular woes. Physicians have urged patients to adopt low-fat diets and take statins to lower cholesterol levels. But this is blaming the messenger.
“Elevated cholesterol is a symptom,” says P. Michael Stone, MD, MS, a family physician in Ashland, Ore., and a faculty member at the Institute for Functional Medicine. He believes the notion of cholesterol as the cause is “the biggest misconception surrounding the cardiovascular disease.”
“The big focus of the American Heart Association for the last 50 years has been cholesterol, but if it is elevated, there is a cause for that elevation,” he says. “The answer is not as simple as a low cholesterol level. The best approach is to figure out what is driving abnormal or unbalanced cholesterol numbers.”
Guarneri, Stone, and others believe the future of heart-disease prevention and treatment lies not in mere symptom management — lowering cholesterol, blood pressure, and blood sugar via pharmaceuticals — but in identifying the underlying causes of those heart disease symptoms. They predict that this approach will transform the way we assess, prevent, and manage cardiovascular disease.
“Understanding the root causes can help you identify and recognize the five patterns we know the impact and increase the risk of the cardiometabolic syndrome: inflammation, oxidative stress, insulin dysfunction, autonomic dysfunction, and endothelial dysfunction,” says Stone.
In other words, inflammatory conditions, free radicals, high blood sugar, stress overload, and blood-clotting problems all contribute to heart disease. The problem can’t be reduced to the butter on your toast.
In many cases, dietary sources have little to do with elevated serum cholesterol levels. Rather, the body begins to produce more of the substance on its own to handle increased demand. For example, when chronic inflammation begins to lower testosterone production, Stone says, the body produces more cholesterol (a key precursor to testosterone) to revive the hormone.
Likewise, an autonomic nervous system problem can also raise cholesterol production: The body produces more cortisol when it’s in fight-or-flight mode, and it requires more cholesterol to do so.
Sure, there are some people who are genetically predisposed to high cholesterol, Stone says, but they are fairly rare. Most of the time, elevated cholesterol is a response to something else occurring in the body. When we erase the symptom instead of digging for the cause, we’re ignoring the fact that high cholesterol can also be an immune response.
“If you’re having trouble getting your LDL levels down, that might mean you have an underlying infection. So when we crash somebody’s LDL with statins, are we inhibiting their innate immune system?” Stone asks. “You look at all this and think, ‘What are we doing by willy-nilly treating a number and not looking at root cause?’”
Also, Stone emphasizes that normal cholesterol levels do not mean no — or even, low — risk. In fact, 25 percent of people who have heart attacks have low cholesterol, he notes, while 25 percent of people with high cholesterol do not have plaque or heart disease.
“It raises the question: Is cholesterol the right marker to check — and is it the best marker to be checked?” asks Stone. “And the resounding answer is that it is a marker, but it’s not the best marker.”
Myth #2: LDL cholesterol is bad.
When rating types of cholesterol, high-density lipoproteins (HDL) are “good,” and low-density lipoproteins (LDL) are “bad” — right?
Not exactly. While many doctors swear by the standard lipid panel to measure the overall levels of HDL and LDL in the blood, many progressive-minded practitioners use advanced tests to identify the actual number and detailed characteristics of lipoprotein particles. “I expect within five years these advanced tests will be standard,” Stone says.
These tests allow practitioners to identify patients with “normal” cholesterol numbers who might still be in danger, as well as patients with high numbers who might be fine — or have things other than high cholesterol to worry about.
A typical lipid panel shows the LDL volume, not the specific number of particles. A high LDL volume may indicate that the particles are big, fluffy, and harmless.
But a low LDL volume can be misleading. It may be made up of tiny, dense particles that are vulnerable to oxidation. This increases inflammation, which in turn can trigger the cycle that leads to a heart attack.
“It’s those tiny LDL particles that have a higher risk of squeezing between the cracks of the lining of the blood vessels, causing plaque,” explains functional-medicine internist Yousef Elyaman, MD, IFMCP, founder and medical director of Absolute Health, a primary-care practice in Ocala, Fla.
“The plaque eventually gets thicker and thicker, and at some point, it can pop. When it pops, the body tries to fix it, forming a clot, and that can cause a heart attack or a stroke.”
Two people might have identical LDL-cholesterol levels of 70, which is considered optimal by conventional standards. But in one person the particles could be large and harmless, while in the other the particles could be tiny and dangerous.
“So you have one person with an LDL level of 70 that’s low risk and another person with an LDL level of 70 that’s very high risk,” Elyaman says. How can someone prevent or reverse the formation of small, dense LDL particles? Again, it all depends on the underlying cause of oxidation, which can vary from person to person.
“I’ll have patients who say, ‘Oh, the L in LDL stands for lousy cholesterol,’” says Guarneri. “And I say, ‘No, that’s not true. It’s what happens with that cholesterol that matters — does it get oxidized? That’s when it becomes a problem for causing vascular disease.’
“So many factors can lead to oxidative stress, including air pollution; insulin resistance; exposure to toxins like lead, mercury, and cadmium; and infections like herpes, chlamydia, and hepatitis.
“No one is addressing this. Instead, most doctors tell people to eat fat-free or low-fat food,” Guarneri notes. As for “good” HDL, which clears LDL cholesterol from your system, it is generally protective. But levels can be too high.
“Sometimes elevated HDL levels above the 80s could point to dysfunctional HDL,” says Shilpa P. Saxena, MD, a functional medicine family physician who runs the SevaMed Institute in Lutz, Fla. “This means that the HDL particles may not be cleaning efficiently enough, and thereby are creating an increased supply of HDL particles that still don’t work.”
“It’s very tricky,” Elyaman explains. “HDL may be high due to a higher cholesterol burden, but it may also be highly elevated and protective.” In other words, a high HDL number can indicate that you have plenty of internal janitors on staff cleaning up any oxidized particles of LDL; it can also mean the HDL janitors are slacking on the job.
To differentiate, Guarneri uses an advanced lipid panel to measure HDL2b, the most protective, large, and buoyant form of HDL. Knowing the precise composition and size of the HDL and LDL molecules helps doctors identify those patients with normal numbers who may still be at significant risk for cardiovascular issues.
“The case that shocks you most is the 50-year-old who has total cholesterol of 140, their HDL numbers are borderline, their LDL numbers are fine — and they have an acute myocardial infarction and a five-vessel bypass because they have severe cardiovascular disease,” Stone says.
Myth #3: Eating cholesterol and saturated fat raises blood cholesterol levels.
For decades, we’ve been fed the diet–heart hypothesis, which suggests foods rich in cholesterol and saturated fat (think butter, eggs, full-fat yogurt, and red meat) raise our blood cholesterol levels. But the case for low- and fat-free diets is unraveling.
In 2013 the American Heart Association and the American College of Cardiology acknowledged that there was not enough scientific evidence to support the idea that limiting dietary cholesterol lowered serum cholesterol levels. And earlier this year, the federal government reached a similar conclusion in its 2015–2020 Dietary Guidelines for Americans, reversing 50 years of warnings about cholesterol and stating it is “not a nutrient of concern for overconsumption.”
“I love that: ‘not a nutrient of concern.’ What an unceremonious death for the tarnished reputation of dietary cholesterol!” writes Mark Hyman, MD, director of the Center for Functional Medicine at the Cleveland Clinic, in his latest book, Eat Fat, Get Thin: Why the Fat We Eat Is the Key to Sustained Weight Loss and Vibrant Health.
The government also softened its guidelines on reducing overall fat intake after it was shown that many people who adopt a low-fat diet simply replace the fat in their diets with unhealthy refined carbs and added sugars, which compensates for the missing flavor and satisfaction.
“Low fat diets have had unintended consequences, turning people away from healthy high-fat foods and toward foods rich in added sugars, starches, and refined grains,” notes cardiologist and Harvard Medical School Professor Dariush Mozaffarian, MD. “This has helped fuel the twin epidemics of obesity and [type 2] diabetes in America. We really need to sing it from the rooftops that the low-fat diet concept is dead. There are no health benefits to it.”
Although Hyman applauds the fact that numerous mainstream organizations are abandoning the low-fat message, he points out that many health experts still cling to two scientifically unsupported ideas about fat: first, that saturated fat causes heart disease and, second, that vegetable oils are heart healthy.
Multiple studies in recent years have shown that it’s refined carbs and sugars — not saturated fat — that tend to drive abnormal cholesterol and heart disease, largely because they contribute to insulin overload and systemic inflammation, Hyman notes. Meanwhile, saturated fats can have beneficial effects on cardiovascular health, especially when consumed in the context of a low-carb, high-fiber diet rich in omega-3 fatty acids.
“Dietary saturated fat raises the good kind of LDL (light, fluffy LDL) and raises HDL (the ‘good’ cholesterol),” he explains.
Some experts think polyunsaturated vegetable oils are a heart-healthy alternative to saturated fats. But Hyman warns against consuming these highly refined and processed oils (think corn, sunflower, and safflower oils) because they are high in pro-inflammatory omega-6 fatty acids. Their components quickly become rancid, which can lead to oxidized cholesterol in the body. And oxidation is the primary driver of small, dense, dangerous LDL.
His advice on where to find truly heart-healthy fats? Get polyunsaturated and monounsaturated fats from whole foods such as fish, nuts, seeds, and avocados. And don’t fear the saturated fats in butter, meat, chicken, and eggs.
Myth #4: Statins save the lives of healthy people without heart disease.
Statins are among the most widely prescribed drugs in the United States, and the number of Americans taking them swelled after the American Heart Association, and the American College of Cardiology issued new guidelines in 2013 that expanded the parameters of who qualified for treatment. The controversial advice elicited a protest from many corners of the medical world.
“I think if we go with the American Heart Association’s current guidelines, we are missing the mark,” Guarneri says. “The guidelines would place 87 percent of men and 54 percent of women between the ages of 60 and 75 on statin therapy. Talk about a multibillion-dollar business.”
Rita Redberg, MD, a cardiologist at the University of California, San Francisco Medical Center and the editor of JAMA Internal Medicine, wrote a pointed critique in the New York Times, arguing that the shift in guidelines was not based on data showing the benefits of lowering cholesterol and would primarily benefit Big Pharma.
And what the drug companies don’t advertise, adds Guarneri, is that otherwise-healthy people on statins continue to have heart attacks. “People have lost sight of the big picture because cholesterol is an easy target: ‘You just take a pill; we lower your cholesterol,’” she says.
And then there are the side effects. Several studies have linked the long-term use of statins to increased risk of cancer, diabetes, and even cognitive impairment.
“Statins are overused and overpromised in primary prevention,” Redberg says, adding that lifestyle changes such as giving up smoking, adopting a healthy diet, and exercising are much better at reducing the risk of heart disease. “People should understand the risks and limited benefit in an informed discussion before deciding if statins are right for them.”
There are cases in which statins are warranted, Elyaman says. “If someone already has heart disease, then we know that individual has gotten to the point where she is high risk — that plaque that’s formed can pop at any second. If she’s not willing to make any lifestyle changes, then statins may be in order,” he explains. “But I think we have to get the message out to all of those people on statins who don’t have heart disease that they don’t need to be taking them.”
Another way statins can backfire: Once people are on the medication, they often feel less of an urgency to make lifestyle changes, says Elizabeth Frates, MD, a physician and health-and-wellness coach in the Boston area with expertise in lifestyle medicine.
They mistakenly believe that the drug “allows them to eat processed foods or eat unhealthy foods. They feel that their medicine gives them the superpower where they don’t have to worry about their lifestyle anymore,” she explains.
Meanwhile, doctors also underestimate their patients, says Elyaman. “There’s this misconception among many doctors that patients aren’t willing to make lifestyle changes. Well, if you don’t believe that your patients are going to make lifestyle changes, it can become a self-fulfilling prophecy.
“I’ve actually heard physicians tell their patients, ‘You know, you should probably eat a healthy diet and exercise, but you’re probably not going to do that. I know I’m not going to do that. So go ahead and take this pill.’”
Donald Hensrud, MD, who directs the Mayo Clinic Healthy Living Program in Rochester, Minn., thinks that lifestyle changes in diet and nutrition, exercise, and resilience can make the difference when it comes to cardiovascular disease. “With lifestyle, people underestimate just how powerful it can be,” he says.
Saxena agrees. Doctors should trade them “to statin or not to statin” focus for an approach that goes beyond mere cholesterol numbers to identify and address the root causes of cardiovascular disease.
“We need to make a big U-turn in the way we live,” she says.
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