To support mountains of anecdotal evidence, there have been an increasing number of clinical trials to validate and quantify the benefits of Reiki. Below is a very partial list, to give you an idea of how this work is being approached and by whom. Due to copyright considerations, I cannot give you access to all these studies, but I’ve provided links to further information when possible.

It is abundantly clear that more, quality research is needed, and I’m working towards that goal as quickly as possible via several avenues. If you know any researchers or students of medicine or mental health looking for an incredible opportunity, please have them get in touch. I am fortunate to have a number of enthusiastic colleagues eager to shed more light on this subject for members of the medical community who are still in doubt.

Reiki for Pain During Hemodialysis: A Feasibility and Instrument Evaluation Study
Journal of Holistic Nursing, August 2018

An Alternative Therapeutic Approach on Bone Cells Differentiation after Administration of Biofield Energy Treated Vitamin D3 in MG-63 Cell line 
Journal of Pharmaceutics & Pharmacology, July 2018

Effects of reiki therapy on blood pressure for subjects with hypertension in selected hospital, Bangalore
International Journal of Nursing Care, 2018

Complementary Alternative and Integrative Treatment for Substance Use Disorders
Journal of Psychosocial Nursing and Mental Health Services, June 2018

Pain Management in the Pediatric Palliative Care Population
Journal of Nursing Scholarship, May 2018

Immediate Symptom Relief After a First Session of Massage Therapy or Reiki in Hospitalized Patients: A 5-year Clinical Experience from a Rural Academic Medical Center
Journal of Alternative and Complementary Medicine, 2018

Effects of Reiki Versus Physiotherapy on Relieving Lower Back Pain and Improving Activities Daily Living of Patients With Intervertebral Disc Hernia.
Journal of Evidence Based Integrative Medicine, 2018

Cost Savings from Reducing Pain Through the Delivery of Integrative Medicine Program to Hospitalized Patients
The Journal of Alternative and Complementary Medicine, 2018

An Overview of Complementary and Alternative Medicines
The University of British Columbia Medical Journal, 2018

An Integrative Review of Nonpharmacological Interventions to Improve Sleep among Adults with Advanced Serious Illness
Journal of Palliative Medicine, January, 2018

Safety of Reiki Therapy for Newborns at Risk for Neonatal Abstinence Syndrome
Holistic Nursing Practice, 2018

The impact of Reiki on side effects in patients with head-neck neoplasia undergoing radiotherapy: a pilot study
Professioni infermieristiche, 2017

Effectiveness of Reiki Therapy on Dysmenorrhoea among Adolescent Girls
Indian Journal of Public Health Research & Development, 2017

Energetic Modalities as a Self-Care Technique to Reduce Stress in Nursing Students
Journal of Holistic Nursing, Dec, 2017

Integrative Medicine and Mood, Emotions and Mental Health
Primary Care: Clinics in Office Practice, June, 2017

Instrumental Measurements of Water and the Surrounding Space During a Randomized Blinded Controlled Trial of Focused Intention.
Journal of Evidence-Based Complementary & Alternative Medicine, May, 2017

Effects of Reiki on Pain, Anxiety, and Blood Pressure in Patients Undergoing Knee Replacement: A Pilot Study.
Holistic Nursing Practice, Apr/May, 2017

Effects of Reiki on Pain and Vital Signs When Applied to the Incision Area of the Body After Cesarean Section Surgery: A Single-Blinded, Randomized, Double-Controlled Study
Holistic Nursing Practice, Nov/Dec, 2016

Combining conventional treatment and complementary therapies benefits pituitary patients
Endocrine Abstracts, 2016

Reiki's effect on patients with total knee arthroplasty: A pilot study
Nursing, February, 2016

The Effect of Reiki on Depression in Elderly People Living in Nursing Home
Indian Journal of Traditional Knowledge, 2016.

The Clinical Effectiveness of Cognitive Behavior Therapy and an Alternative Medicine Approach in Reducing Symptoms of Depression in Adolescents
Psychiatry Research, March 2016

Effects of Integrative PTSD Treatment in a Military Health Setting
Energy Psychology Journal, 2015.

The Use of Self-Reiki for Stress Reduction and Relaxation
Journal of Integrative Medicine, 2015.

Effects of Distant Reiki on Pain, Anxiety and Fatigue in Oncology Patients in Turkey:  A Pilot Study
Asian Pacific Journal of Cancer Prevention, 2015.

The Effect of Reiki Therapy on Quality of Life of Patients with Blood Cancer:  A Randomized Controlled Trial
European Journal of Integrative Medicine, December 2015

Integrative Reiki for Cancer Patients: A Program Evaluation
Integrative Cancer Therapies, January, 2014.

Effect of Reiki Therapy on Pain and Anxiety in Adults: An In-Depth Literature Review of Randomized Trials with Effect Size Calculations
Pain Management Nursing: Official Journal of the American Society of Pain Management Nurses, February 27, 2014.

Comparison of Physical Therapy with Energy Healing for Improving Range of Motion in Subjects with Restricted Shoulder Mobility
Evidence-Based Complementary and Alternative Medicine, 2013.

A Canadian Experience of Integrating Complementary Therapy in a Hospital Palliative Care Unit
Journal of Palliative Medicine, November 10, 2013.

Symptomatic Improvement Reported After Receiving Reiki at a Cancer Infusion Center
American Journal of Hospice and Palliative Medicine, December 5, 2012.

Application of Reiki in Nurses Diagnosed with Burnout Syndrome Has Beneficial Effects on Concentration of Salivary IgA and BP
Revista Latino-American de Enfermagem, September, 2012

The Effects of Reiki Therapy on Pain and Anxiety in Patients Attending a Day Oncology and Infusion Services Unit
American Journal of Hospice and Palliative Medicine, October 13, 2011.

Effects of Reiki on Autonomic Activity Early After Acute Coronary Syndrome
Journal of the American College of Cardiology, September 11, 2010.

Effects of Reiki on Anxiety, Depression, Pain and Physiological Factors in Community-Dwelling Older Adults
Research in Gerontological Nursing, November , 2010.

Pilot Crossover Trial of Reiki Versus Rest for Treating Cancer-Related Fatigue
Integrative Cancer Therapies, 2007.

Long-term Effects of Energetic Healing on Symptoms of Psychological Depression and Self-Perceived Stress
Energetic Healing, May/June, 2004.

Reiki Therapy: The Benefits to a Nurse/Reiki Practitioner
Holistic Nursing Practice, July/August, 2003.­­­

The Effect of the “Laying On of Hands” on Transplanted Breast Cancer in Mice
Journal of Scientific Exploration, 2000.