A study published in the January 19, 2012, issue of the scientific journal the Archives of Vertebral Subluxation Research shows that specific chiropractic adjustment techniques cause positive changes in neck curvatures. The authors of the study begin by noting, "There has been an increasing amount of attention in the literature on the role of spinal structure and the affects on neurology, health, and physiology."
Researchers note that either a reduction, loss, or reversal of the normal cervical curvature, as seen on a side x-ray of the neck, is associated with problems, including ADHD, otitis media, respiratory problems, headaches, neck pains, sinus infections, scoliosis, and spinal degeneration. Additionally, researchers point out that the strength of a spine is dependent on having normal curvatures.
In this study, 51 chiropractic patients were included in a retrospective analysis. All participants had to have been under chiropractic care long enough to have a follow-up side neck x-ray taken. The average number of visits for patients in this study before follow-up post-x-rays were taken was 12, with the average time frame being just over ten weeks. The results showed that the average correction of cervical curve for all patients in this study was 56.76%. Seven of the patients in the study reached a maximum improvement by the end of the analysis, while five cases showed a maximum improvement after only one specific chiropractic adjustment.
The study authors noted that the results of this study were attained without any use of traction, exercises, therapy, or rehabilitation, thus ruling out other cofactors having an influence on the results. They also reported that, "One hundred percent (of patients) had some degree of positive change towards lordosis (normal forward neck curve) or a decrease in kyphosis (harmful reversal of neck curve)."