Chiropractic Cuts
Blood Pressure
Study Finds Special 'Atlas Adjustment'
Lowers Blood Pressure
By
Daniel J. DeNoon
WebMD Health News
Reviewed by
Louise Chang, MD
March 16, 2007 -- A special chiropractic
adjustment can significantly lower high blood pressure,
a placebo-controlled study suggests.
"This procedure has the effect of not one,
but two blood-pressure medications given in combination," study leader George
Bakris, MD, tells WebMD. "And it seems to be adverse-event free. We saw no side
effects and no problems," adds Bakris, director of the
Eight weeks after undergoing the procedure,
25 patients with early-stage high blood pressure had significantly lower blood
pressure than 25 similar patients who underwent a sham chiropractic adjustment.
Because patients can't feel the technique, they were unable to tell which group
they were in.
X-rays showed that the procedure realigned
the Atlas vertebra -- the doughnut-like bone at the very top of the spine --
with the spine in the treated patients, but not in the sham-treated patients.
Compared to the sham-treated patients,
those who got the real procedure saw an average 14 mm Hg greater drop in
systolic blood pressure (the top number in a blood pressure count), and an
average 8 mm Hg greater drop in diastolic blood pressure (the bottom blood
pressure number).
None of the patients took blood pressure
medicine during the eight-week study.
"When the statistician brought me the data,
I actually didn't believe it. It was way too good to be true," Bakris says. "The
statistician said, 'I don't even believe it.' But we checked for everything, and
there it was."
Bakris and colleagues report their findings
in the advance online issue of the Journal of Human Hypertension.
Atlas Adjustment and Hypertension
The procedure calls for adjustment of the
C-1 vertebra. It's called the Atlas vertebra because it holds up the head, just
as the titan Atlas holds up the world in Greek mythology.
Marshall Dickholtz Sr., DC, of the
"At the base of the brain are two centers
that control all the muscles of the body. If you pinch the base of the brain --
if the Atlas gets locked in a position as little as a half a millimeter out of
line -- it doesn't cause any pain but it upsets these centers," Dickholtz tells
WebMD.
The subtle adjustment is practiced by the
very small subgroup of chiropractors certified in National Upper Cervical
Chiropractic (NUCCA) techniques. The procedure employs precise measurements to
determine a patient's Atlas vertebra alignment. If realignment is deemed
necessary, the chiropractor uses his or her hands to gently manipulate the
vertebra.
"We are not doctors. We are spinal
engineers," Dickholtz says. "We use mathematics, geometry, and physics to learn
how to slide everything back into place."
What
does this have to do with high blood pressure
pressure?
Bakris notes that some researchers have
suggested that injury to the Atlas vertebra can affect blood flow in the
arteries at the base of the skull. Dickholtz thinks the misaligned Atlas
triggers release of signals that make the arteries contract. Whether the
procedure actually fixes such injuries is unknown, Bakris says.
Bakris began the study after a fellow
doctor told him that something strange was happening in his family practice. The
doctor had been sending some of his patients to a chiropractor. Some of these
patients had high blood pressure.
Yet after seeing the chiropractor, the
patients' blood pressure had normalized -- and a few of them were able to stop
taking their blood pressure medications.
So Bakris, then at
"Is it going to be for everybody with high
blood pressure? No," Bakris says. "We clearly need to identify those who can
benefit. It is pretty clear that some kind of head or neck trauma early in life
is related to this. This is really a work in progress. It is certainly in the
early stages of research."
Dickholtz has been teaching, practicing,
and studying the NUCCA technique for 50 years. He says high blood pressure is
far from the only thing an Atlas misalignment causes.
"On the other hand, if people have high
blood pressure, there is a tremendous possibility they need an Atlas
adjustment," he says.

"My blood pressure was lowered with the help of upper cervical adjustments, exercise and proper nutrition. I recommend everyone and anyone to Dr. Gross, especially those at wits with their health concerns."
