Researchers
confirm heart risk: Inflammation (Repair Deficit)
August
4, 2002 Posted: 9:20 AM EDT (1320 GMT) BOSTON (AP) --
Worse
than cholesterol? Hard to believe, perhaps, but the top health
concern of millions of Americans is about to be trumped by what
doctors say is an even bigger trigger of heart attacks. Dr. Paul
Ridker and his team of researchers have conducted studies that
suggest inflammation is more important than cholesterol in triggering
heart attacks. The condition is low-grade inflammation, which
may originate in a variety of unlikely places throughout the body,
including even excess fat. New federal recommendations are being
written that will urge doctors to test millions of middle-aged
Americans for it.
PERQUE
note: Inflammation is an effort of the body to repair
that is blocked by nutrient or buffering mineral deficits, inability
to get rid of toxins, or defense burdens of the immune system
that prevent repair from proceeding. The
PERQUE Wellness
cross-reference guide to cardiovascular
health includes all the essential nutrients to overcome deficits
and enhance detoxification. You can monitor results by observing
declines in C-Reactive Protein (CRP) and homocysteine as well.
In refractory cases, consider boosting immune system repair competence
by screening for immune system burdens using the ELISA/ACT Lymphocyte
Response Assay (LRA) delayed hypersensitivity tests and, for more
information call: (800) 525 7372.
The
discovery of its surprising ill effects is causing a top-to-bottom
rethinking of the origins and prevention of heart trouble. Doctors
call it a revolutionary departure from viewing the world's top
killer as largely a plumbing problem blamed on cholesterol-clogged
arteries, the standard theory through the modern era of cardiology.
"The
implications of this are enormous," says Dr. Paul Ridker of Boston's
Brigham and Women's Hospital. "It means we have an entire other
way of treating, targeting and preventing heart disease that was
essentially missed because of our focus solely on cholesterol."
In the past year or two, experts say, the evidence has become
overwhelming that inflammation hidden deep in the body is a common
trigger of heart attacks, even when clogging in the arteries is
minimal.
Now
the main question is: How aggressively should otherwise healthy
people be tested to find and treat it? The new recommendations
are still being drawn up, but they will offer the first formal
blueprint to answer this, probably sometime in the fall.
Doctors
writing them say they will almost certainly recommend broad testing.
Inflammation can be measured with a generic $10 test that looks
for high levels of a chemical called C-reactive protein, one of
many that increase during inflammation.
Experts
expect it to quickly become a standard part of physical exams.
As a result, many people ordinarily considered at low risk will
probably be put on statin drugs, which lower inflammation as well
as cholesterol. No one disputes the importance of cholesterol.
Yet half of all heart attack victims have levels that are normal
or even low. Clearly, something big was missing from the equation,
and that appears to be inflammation. Ridker estimates that between
25 million and 35 million healthy middle-aged Americans have normal
cholesterol but above-average inflammation, putting them at unusual
risk of heart attacks and strokes.
A
series of landmark studies by his team, beginning in 1997, suggest
inflammation is more important than cholesterol at triggering
heart attacks. They found those with high levels of C-reactive
protein have twice the risk of people with elevated cholesterol.
High amounts of the protein also predict increased risk of heart
attacks and strokes years before they occur, even when cholesterol
levels are low. Having both inflammation and high cholesterol
together is especially ominous, resulting in a nine-fold increase
in risk.
Everyone
who reaches middle age has some degree of fatty buildup, called
plaque, in the heart arteries. The new evidence suggests it becomes
threatening if weakened by inflammation, which makes it squishy
and fragile. Even a small lump of plaque can burst like an overripe
pimple, prompting the formation of a clot that in turn chokes
off blood flow and causes a heart attack.
Many
people with no outward signs of anything wrong have high levels
of internal inflammation. It is exactly the same sort that causes
swelling, heat and redness during infections or allergic rashes.
Doctors believe the internal inflammation has many possible sources.
Often, the plaque itself becomes inflamed as white blood cells
invade in a misguided defense attempt. But inflammation that arises
elsewhere apparently can be as bad, for it bombards the plaque
with damaging chemicals. For instance, fat cells churn out these
inflammatory proteins, which helps explain why being overweight
is so bad for the heart. Other possible triggers include high
blood pressure, smoking and lingering low-level infections, such
as chronic gum disease.
Although
many chemicals increase during inflammation, C-reactive protein,
or CRP, is particularly easy to measure. Some already test for
it, including White House doctors, who checked President Bush's
CRP level last summer (his was extremely low).
In
March, the Centers for Disease Control and Prevention and the
American Heart Association held a meeting of 50 experts in Atlanta
to review the scientific evidence on inflammation and make recommendations.
These are still being discussed, but some doctors involved say
they are likely to urge CRP screening for people already considered
at mild to moderate risk of heart attacks. These include smokers
and those with a combination of other less ominous risks, such
as being middle-aged and having borderline high cholesterol or
blood pressure. For instance, they might recommend CRP testing
for a 45-year-old man with cholesterol in the low 200s and blood
pressure just below the cutoff for treatment. However, others
believe CRP should measured in everyone over age 40, just like
cholesterol, regardless of their other risk factors.
"It
begins to look like a standard risk factor that one would evaluate
at least once in middle age in most people," says Dr. Wayne Alexander
of Emory University, one member of the recommendations committee.
"This is a very important concept for the general public to be
aware of and to think about for their own health." Doctors hope
to have the recommendations ready for publication in the journal
Circulation in November, followed by a campaign to teach doctors
and ordinary people about it.
"Our
goal is to have a broad-based consensus and use all available
means to disseminate that information widely," says Dr. George
Mensah, the CDC's chief of cardiovascular health. Many hospitals
can already do the test. However, until the recommendations come
out, most doctors are unlikely to know exactly whom to test or
what to make of the results. In fact, the White House doctors
who checked Bush had to call Ridker to figure out how to interpret
his numbers.
CRP
probably will not matter much for heart attack survivors and others
who already know they have heart disease, since presumably doctors
are already doing everything they can to keep their condition
from getting worse. "We believe the niche for C-reactive protein
-- and it is a large niche -- is the healthy population who want
to do what they can to lower their risk of cardiovascular disease,"
says Dr. Richard Cannon of the National Heart, Lung and Blood
Institute.
Screening
is important because inflammation can be readily lowered in several
ways. One of the most powerful is losing weight. Exercise also
helps, as does moderate alcohol intake, giving up smoking and
lowering blood pressure. Of course, this amounts to the same healthy
living advice that doctors have long dispensed. But now they have
a much better understanding of why it works so well. Furthermore,
they are likely to urge these habits on people with bad CRP readings
who until now would have seemed to be at no special risk of heart
problems.
Many
of the standard heart medicines also lower inflammation. These
include aspirin, Plavix, ACE inhibitors and the statin drugs,
such as Lipitor and Zocor. [These however are less safe
than primary nutrient repair stimulating supplements such as
PERQUE
Life Guard, PERQUE
MitoGuard Plus,
PERQUE
Potent C Guard,
and PERQUE
Pain Guard Forté].
The
statins are now prescribed to lower cholesterol, and they do so
dramatically. But studies have shown they ward off heart attacks
much more powerfully than would be expected from their effects
on cholesterol alone. In fact, people with moderate cholesterol
seem to benefit just like those with readings off the charts.
Lowering inflammation probably explains why. [The
data suggests that the mild antioxidant effects of statin medications
are the basis for the benefits. This is true for antioxidant deficient
people. People taking sufficient, more effective nutrient antioxidants
do not benefit from statins.]
Still,
some important details remain to be settled. One is population-wide
data on CRP levels and their connection to heart disease. Ridker
is finishing a large study, to be released later this year. Ridker's
study traces this relationship with CRP readings from tens of
thousands of people. "Paul has got data now that slam-dunks it,"
says Dr. Richard Milani of the Ochsner Clinic in New Orleans.
Another
gap is rock-solid evidence that lowering inflammation truly prevents
heart attacks and saves lives. Ridker hopes to prove this with
a study to begin this fall that will compare statin drugs and
dummy pills in 15,000 middle-aged men and women with normal cholesterol
and above average CRP.
The
new thinking about inflammation "will change everything we do
in heart disease," predicts Dr. Eric Topol, cardiology chief at
the Cleveland Clinic. "In the last decade, people talked about
their cholesterol levels," he says. "In the next decade, the cocktail
chatter will be, 'What's your C-reactive protein?' Everyone will
need to know that." |