According to research appearing in the February, 2001 issue of the Journal of Manipulative and Physiologic Therapeutics, chiropractic adjustments to the cervical spine may be beneficial to patients with high blood pressure. A total of 110 patients participated in two studies with 70 patients demonstrating signs of upper cervical subluxation/joint dysfunction. Patients receiving upper cervical adjustments had a significant decrease in systolic blood pressure compared to the control group.