A study published in 2007 found that chiropractic care may help manage blood pressure?
Since the early 1940s, a small group of chiropractors have chosen to specialize in the care of only the C1 or atlas vertebra. While most chiropractors adjust the entire spine, members of the National Upper-Cervical Chiropractic Association (NUCCA) and others like them have chosen to focus purely in this one area.
Unlike the other vertebra, which interlock one to the next, the atlas relies solely upon soft tissue (muscles and ligaments) to maintain alignment; therefore, the atlas is uniquely vulnerable to displacement. Displacement of C1 is pain free and so typically remains undiagnosed and the health-related consequences will generally be attributed to another cause.
Based on the hypothesis that correcting misalignment of the atlas reduces and maintains a lower blood pressure, this study used a double blind, placebo-controlled design at a single center, 50 drug naive patients with stage 1 hypertension were randomized to receive a NUCCA procedure or a sham procedure. Patients received no anti-hypertensive medications during the 8-week study. At the tend of week 8, the study concluded that restoration of atlas alignment is associated with marked and sustained reductions in BP similar to the use of two-drug combination therapy.