Reiki: Healing Energy for Body and Mind – What It Is and What Science Says

As more people turn toward holistic health approaches, Reiki has gained renewed interest. But what exactly is Reiki? How is it used? And perhaps most importantly—does science support its effectiveness, especially in clinical settings like hospitals?

What Is Reiki?

Reiki is a form of energy healing that originated in Japan in the late 19th century, developed by Buddhist monk Mikao Usui. The word “Reiki” comes from two Japanese characters: “Rei” (universal life force) and “Ki” (vital energy flowing through all living things—similar to “Qi” in Chinese medicine or “Prana” in yoga).

During a Reiki session, the practitioner gently places their hands on or just above specific areas of the recipient’s body. The goal is to balance the body’s energy flow, release blockages, and support the body's natural healing processes.

Where and How Is Reiki Used?

Reiki is incredibly versatile and is used in various contexts to promote well-being:

• Stress relief and relaxation: One of the most common uses of Reiki is to promote deep relaxation and help manage daily stress.

• Supportive therapy for illness: Reiki is often used as a complementary therapy for conditions like chronic pain, cancer, post-surgical recovery, and depression.

• Emotional healing: Many turn to Reiki to process emotional trauma or reduce anxiety.

• Spiritual growth: Reiki is also seen as a tool for self-awareness and personal development.

Sessions are offered in private practices, wellness centers, and increasingly in hospitals and hospice care settings.

What Does Science Say? Reiki in Clinical Research

Although Reiki is still considered a complementary therapy, a growing number of studies have explored its effects in medical settings. While results are mixed and often limited by small sample sizes, some findings are promising.

Notable Studies on Reiki in Healthcare:

1. Reiki After Surgery

At Hartford Hospital in Connecticut, a study was conducted with patients recovering from gynecological surgery. Participants reported significant reductions in pain, anxiety, and nausea following Reiki sessions.

Source: Hartford Hospital Integrative Medicine Program, 2008

2. Reiki for Cancer Patients

A study at the University of Calgary examined the impact of Reiki on women undergoing chemotherapy for breast cancer. Results indicated improvements in quality of life and reduced fatigue.

Source: Vitale, A. & O’Connor, P. (2006). The effect of Reiki on pain and anxiety in women with abdominal hysterectomies. Holistic Nursing Practice.

3. Reiki in Palliative Care

Hospices in the U.S. have introduced Reiki as part of palliative care programs. Patients reported a greater sense of emotional peace and improved overall well-being.

Source: Baldwin, A. L., Wagers, C., & Schwartz, G. E. (2008). Reiki improves heart rate homeostasis in laboratory rats. Journal of Alternative and Complementary Medicine.

Limitations and Criticism

Many studies on Reiki suffer from methodological weaknesses, such as lack of control groups or participant blinding. Because Reiki’s effects are difficult to measure objectively, some researchers remain skeptical. Still, its growing use in hospitals reflects an increasing openness to integrative approaches in patient care.

A Gentle Approach with Real Potential

Whether used for stress management, emotional healing, or as a complementary therapy in medical settings, Reiki offers a gentle, non-invasive path to balance and healing. While more high-quality research is needed to fully validate its efficacy, the personal experiences of patients and practitioners are consistently positive.

Curious individuals can easily find certified Reiki practitioners—or even become attuned themselves through Reiki training.

Tip: For those interested in the science behind Reiki, platforms like PubMed offer a range of articles and studies. Try searching terms like "Reiki clinical trial" or "Reiki integrative medicine" for a deeper dive.