In a pilot study conducted at the University of Chicago a one time specialized chiropractic adjustment, delivered to patients suffering from high blood pressure and misaligned C1 vertebra, resulted in significant reductions in diastolic and systolic blood pressure compared to controls. According to a press release from the University of Chicago medical center, office of public affairs, a decrease in blood pressure was equivalent to that seen with concurrent administration of two blood pressure drugs. None of the patients took in the hypertensive medications during the study period.
Fifty percent of the patients received a specific chiropractic adjustment, while the remaining received a sham procedure, carefully designed to mimic the actual adjustment in order to ensure blinding.?? Eight weeks from the intial adjustment, blood pressure was measured in the two groups.?? There was a significant decrease in the blood pressure of the group that received the adjustment when compaired to the group that received the sham adjustment.
The study authors emphasize that “while the mechanism as to why this improvement in blood pressure occurs is unknown and cannot be determined by the study… the data presented, however, raises a number of important questions including a) How does misalignment of C1 effect hypertension; and b) If there is a cause-and-effect relationship between C1 and hypertension, is now position of C1 an additional risk factor for the development of hypertension?” A larger clinical trial is being planned to address these questions.