Journal of Human Hypertension 2 March 2007 (advanced online publication).
ABSTRACT: Anatomical abnormalities of the cervical spine at the level of the Atlas vertebra are associated with relative ischaemia of the brainstem circulation and increased blood pressure (BP). Manual correction of this mal-alignment has been associated with reduced arterial pressure. This pilot study tests the hypothesis that correcting mal-alignment of the Atlas vertebra reduces and maintains a lower BP. Using a double blind, placebo-controlled design at a single center, 50 drug naïve (n=26) or washed out (n=24) patients with Stage 1 hypertension were randomized to receive a National Upper Cervical Chiropractic (NUCCA) procedure or a sham procedure. Patients received no antihypertensive meds during the 8-week study duration. The primary end point was changed in systolic and diastolic BP comparing baseline and week 8, with a 90% power to detect an 8/5 mm Hg difference at week 8 over the placebo group. The study cohort had a mean age 52.7 ±9.6 years, consisted of 70% males. At week 8, there were differences in systolic BP (-17 ±9 mm Hg, NUCCA versus -3 ±11 mm Hg, placebo; P<0.0001) and diastolic BP (-10 ±11 mm Hg, NUCCA versus -2 ±7 mm Hg; P=0.002). Lateral displacement of Atlas vertebra (1.0, baseline versus 0.04° week 8, NUCCA versus 0.6, baseline versus 0.5°, placebo; P=0.002). Heart rate was not reduced in the NUCCA group (-0.3 beats per minute, NUCCA, versus 0.5 beats per minute, placebo). No adverse effects were recorded. We conclude that restoration of Atlas alignment is associated with marked and sustained reductions in BP similar to the use of two-drug combination therapy. COMMENTS: In an article on WebMD, the lead author stated that a colleague of his with a family practice had been sending some patients to a local chiropractor. Some of his patients who had high blood pressure came back with normalizing pressure, some even able to eliminate drugs for it. The chiropractor, Dr.Dickhotz of Chicago, IL, provided chiropractic adjustments using the NUCCA upper cervical protocol to adjust the atlas. There was significant reduction in blood pressure during the 8-week course of chiropractic care. In the Gonstead technique we have stated that when both systole and diastole are high, check for subluxations in the upper cervical spine. This preliminary studies confirms that adjustment to upper cervical subluxations in the presence of high blood pressure appears to have a positive effect on lowering blood pressure. Many Gonstead chiropractors have had similar satisfactory results using the Gonstead technique.