A leader in chiropractic research

The Parker Research Institute provides sound, scientific evidence supporting health and wellness. A variety of our research efforts address such topics as pain relief, improved biomechanical function, and the contribution of chiropractic to overall wellness. We have collaborated with such prestigious institutions as Yale University, the University of Oxford, the University of Chicago, and the University of Texas Medical School, and steered international studies in Australia, China, and Canada. We also serve as the research and development arm for companies worldwide seeking to provide evidence supporting the efficacy of their products.

The institute offers a variety of opportunities for health care providers and the public to become actively involved in the research process. Get involved in Parker Research Institute’s latest studies open to volunteers. Chiropractic students can also take an active role in research while in school by volunteering for patient recruitment, examination, manuscript development, presentations, and publishing.

Current Research Publications

Research Findings in the News

Research by Dr. Ndetan and his team presented at the 2013 American Public Health Association (APHA) annual conference in Boston, MA, was recognized as one of the Association’s news flash of the year.

The study on the role of concomitant consumption of light/moderate amount of alcohol and therapeutic amount of acetaminophen on renal dysfunction was also endorse through a press release by the Foundation of Chiropractic Progress (F4CP) in January 2014 and has attracted over 16 media interviewers and has been reported or cited in dozens of national and international media.

Related Links
Oprah.com: Mistakes Healthy People Make
Medical News Today:  Alcohol and acetaminophen combined increases kidney risks
Health Day: Acetaminophen and Alcohol a Bad Mix, Study Suggests
WebMD: Acetaminophen and Alcohol a Bad Mix, Study Suggests
Drug free.org: Combining Alcohol and Acetaminophen Can Increase Risk of Kidney Disease
Public Health News Wire: Even a little alcohol, acetaminophen increases risk of kidney dysfunction

More News


A team of researchers from the Parker Research Institute led by Dr. Xue-Jun Song claimed first place for the best scientific paper at the World Federation of Chiropractic (WFC) Eighth Biennial Congress. Team members assisting with the research include Mr. Qiang Gan, Dr. Jun-li Cao, Dr. Zheng-bei Wang, and Dr. Ronald L. Rupert, Dean of the Parker Research Institute.

“Spinal Manipulation Reduces Pain and Hyperalgesia Produced by Lumbar Intervertebral Foramen Inflammation in the Rat” (J Manipulative Physiological Therapeutics, in press) received The Scott Haldeman Award, the first prize in the International Conferences on Chiropractic Research administrated by the Foundation for Chiropractic Education and Research at the Eighth World Federation of Chiropractic Biennial Congress, Sydney, Australia, June 16-18, 2005.

Dr. Ndetan received the 2nd place award at the 15th Annual Research Appreciation Day oral presentation for his study on Injuries Associated with learning the manipulative therapy. The award was presented at the University of North Texas Health Science Center in April 2007.

An Honorable Mention was awarded to the Parker Research Institute for “Ask Me About Smoke Free” campaign by the Texas Council on Cardiovascular Disease and Stroke, Texas Department of Health, 2006.


Harrison Ndetan, MS, MPH, PhD, Associate ProfessorHarrison Ndetan
Director of Research
Dr. Harrison Ndetan has a graduate degree in Physics from the University of Buea in Cameroon and a graduate degree in Biostatistics and Public Health from the University of North Texas Health Science Center (UNTHSC) in Fort Worth.
Full Biography

Xue-Jun Song, MD, PhD, ProfessorSo
Associate Director of Basic Science Research
Dr. Song received his MD (1986) from Xuzhou Medical College and PhD (1995) in neurobiology from Chinese Academy of Sciences Shanghai Brain Research Institute.
Full Biography

Faculty Research Biographies


One of the most important elements of clinical research involves the successful recruitment of patients. Previous studies of chiropractic practices reveal that word-of-mouth and patient referrals are superior methods of advertising. A similar trend is often observed in the recruitment of patients for clinical trials.

In an effort to gain greater public exposure and establish a positive rapport with the community, researchers at the Parker Research Institute devote a significant portion of their time to various community health events/projects and organizations. Patients are not only presented with the opportunity to participate in research that might be of importance to them, but they become educated about chiropractic wellness and the benefits of chiropractic care to their overall health and well being.

Perhaps the motivation to make a difference in the lives of community members may best be described in a thank you letter from a former patient, “It pleases me to just be noticed and considered.”

Working with Others Nationally and Internationally

A significant portion of research conducted at the Parker Research Institute has been made possible through collaborations with various educational institutions and organizations across the U.S. and abroad. These collaboration efforts add diversity and specialized expertise to our research projects, greatly influencing the quality of research produced at the Parker Research Institute.


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