Reiki is a complementary healing practice in which a practitioner places their hands lightly on or just above your body, with the goal of directing energy to support your natural healing response. The word “Reiki” is Japanese, combining “rei” (universal) and “ki” (life energy). Mikao Usui developed the practice in Japan and opened his first Reiki clinic in Harajuku, Tokyo, in 1922. Today, more than 800 hospitals in the United States, roughly 15% of the total, offer Reiki as a complementary service alongside conventional medicine.
How a Reiki Session Works
During a typical session, you lie fully clothed on a massage table while the practitioner moves through a sequence of hand positions along your body. Sessions generally last 15 to 60 minutes depending on the practitioner and setting. The hands are placed lightly on or slightly above specific areas: the crown of the head, temples, throat, chest, stomach, lower abdomen, and sometimes the knees or feet. Each position is held for one to several minutes before the practitioner moves on.
Most people report feeling warmth, tingling, or deep relaxation during a session. Some feel nothing physical at all. There’s no massage, manipulation, or pressure involved. You don’t need to do anything except lie still and breathe normally.
The Theory Behind It
Reiki is built on an Eastern concept that a life force energy flows through all living things, and that disruptions or imbalances in this energy contribute to illness and emotional distress. Practitioners believe they channel universal energy through their hands into the recipient’s body, helping to restore balance and activate the body’s own healing mechanisms.
It’s important to be straightforward here: there is no scientific evidence supporting the existence of the energy field thought to play a role in Reiki. The National Center for Complementary and Integrative Health (NCCIH) classifies Reiki as a complementary health approach and notes it hasn’t been clearly shown to be effective for any health-related purpose. That said, the absence of a proven mechanism doesn’t necessarily mean the practice has zero effect on how people feel, which is where the clinical research gets interesting.
What the Research Shows
Reiki has been studied for pain, anxiety, and depression, though most research so far has been small in scale and inconsistent in quality. A detailed literature review of randomized trials published in a pain management nursing journal found a wide range of outcomes. Cancer patients receiving Reiki alongside standard pain medication showed statistically significant reductions in pain compared to those who rested instead, with effects growing stronger over multiple sessions. In one study, cancer patients who received Reiki plus opioids reported meaningfully less pain by day four compared to those receiving opioids plus rest alone.
Women recovering from hysterectomy in another trial experienced significant pain reduction at 24 hours post-surgery when they received Reiki, and they used notably less pain medication in the hours and days following the procedure. Community-dwelling adults in a separate study showed the largest pain reductions of any group examined. For anxiety, the effects were smaller but still present in some trials, with the weakest results appearing in women undergoing breast biopsy.
A pilot study examining Reiki’s effect on the autonomic nervous system (the part of your nervous system that controls heart rate, digestion, and stress responses) found small but measurable changes. A separate study on healthcare professionals experiencing burnout found that heart rate variability, a marker of how well your body shifts between stress and recovery states, was significantly higher after Reiki treatment compared to a placebo session. Body temperature also rose slightly, while certain stress-related nervous system activity decreased.
The honest takeaway: some people in clinical settings do report feeling less pain and anxiety after Reiki. Whether that’s due to the energy theory, the deep relaxation of lying still while someone attends to you, a placebo response, or some combination remains an open question. The results have been inconsistent enough that no major medical body endorses Reiki as a treatment for any specific condition.
Safety Profile
Reiki is a very low-risk practice. Because it involves only light touch or no touch at all, there are no known physical side effects or contraindications. It doesn’t interfere with medications, surgical recovery, or other treatments. This is a large part of why hospitals have been willing to integrate it: even if the benefits are uncertain, the downside is essentially zero. The key concern isn’t physical harm but rather the possibility that someone might use Reiki as a replacement for proven medical treatment rather than as a complement to it.
The Three Levels of Training
Reiki practitioners train through a tiered system, each level building on the last.
- Level One focuses on self-healing and basic hands-on technique. Students learn to channel energy through their hands and receive their first “attunement,” a ritual process meant to open their ability to conduct Reiki energy. This level is primarily oriented toward physical healing.
- Level Two introduces sacred symbols and expands the practice to include emotional and mental healing. Practitioners at this level also learn distance Reiki, a technique for working with someone who isn’t physically present. The Japanese name for this method is enkaku chiryo ho, or “distant healing method.” In traditional Japanese teaching, the concept is that the practitioner becomes energetically unified with the recipient rather than “sending” energy across space.
- Level Three (Reiki Master) is the teaching level. Candidates typically need at least a year of active Level Two practice and a minimum of 100 healing sessions before they’re eligible. This level focuses on the deeper spiritual and metaphysical dimensions of the practice and qualifies someone to train and attune new practitioners.
There’s no single governing body that certifies Reiki practitioners, so training quality and requirements vary widely between schools and individual teachers. If you’re looking for a practitioner, asking about their training lineage, level of certification, and years of experience is reasonable.
What to Expect If You Try It
A first Reiki session is low-commitment. You stay clothed, you don’t need to prepare in any specific way, and you can stop at any time. Many people try it for stress relief, chronic pain management, or general well-being rather than for a specific medical condition. Sessions at a private practitioner’s office typically run 60 minutes, while hospital-based sessions are often shorter, sometimes 15 to 20 minutes.
Costs vary widely, from $50 to $150 per session in most areas, and Reiki is generally not covered by insurance. Some hospitals offer it at no additional charge as part of integrative care programs, particularly for cancer patients or surgical recovery. If you’re curious, a single session is enough to tell you whether the experience feels beneficial to you personally, which, given the current state of the science, may be the most practical way to evaluate it.