Reiki & Energy Healing
Hands, Calm, and the Unproven Biofield
Evidence grade 1 of 5, Untested. Read how the Atlas grades evidence.
The honest picture separates the claim from the experience. The core claim, that reiki channels a healing energy, is unproven, and rigorous reviews have concluded the evidence is insufficient to show reiki is an effective treatment for any specific disease; the existence of the energy field is itself doubted by bodies like the NCCIH. At the same time, a number of studies (often small, with variable quality) and some meta-analyses report that reiki sessions can modestly improve relaxation, anxiety, pain, fatigue, and quality of life, consistent with a real comfort-and-relaxation effect even if the "energy" explanation is wrong. So: not a validated treatment for disease, and the biofield premise is unsupported, but plausibly useful as a calming, supportive adjunct, with benefits best understood as relaxation and meaning-response effects rather than energy transfer. The careful framing matters: reiki may help people feel better without doing what it claims to do.
Reference only. Not medical advice.
What can go wrong
Reiki is physically among the lower-risk practices covered here. It is non-invasive, uses light touch or no touch at all, involves no substances or devices, and is generally experienced as calming. The real risks are indirect. Relying on reiki instead of effective treatment for a serious condition, or being steered away from conventional care by a practitioner, can cause harm through delay; NCCIH is explicit that reiki has not been shown to be effective for any health condition. Claims that reiki can by itself treat cancer, infections or other serious disease are not supported and should not guide medical decisions. Anyone with a diagnosed or suspected condition, and anyone considering reiki during pregnancy or for a child or for a mental-health concern, should keep a qualified healthcare provider involved and treat reiki as comfort care rather than therapy. Used as it usually is in clinical settings, alongside medical care and for relaxation, the caution is about expectations and substitution, not direct harm.
Reiki is a Japanese practice, developed by Mikao Usui in 1922, in which a practitioner rests their hands on or just above a clothed person to channel what the tradition calls universal life energy for relaxation and healing. It sits within a family of biofield therapies alongside Therapeutic Touch and Healing Touch, and it has become a common comfort offering in hospitals and hospices. The honest picture separates the experience from the claim. No scientific evidence supports the energy field reiki invokes, and controlled tests of whether practitioners can even detect such a field return chance-level results. Rigorous reviews, including Lee, Pittler and Ernst in 2008 and the current NCCIH assessment, find insufficient evidence that reiki treats any disease. At the same time, a number of studies report modest gains in relaxation, anxiety and quality of life, consistent with the comfort of quiet attention and touch and with the meaning response. Reiki is physically very low-risk; the caution is not to let it stand in for effective care.
A Japanese hands-on energy-healing practice, now common in hospitals, whose "life-force" claim is unproven but whose calm sessions can genuinely aid relaxation and wellbeing.
What people take it for
These are the reasons people give for taking it. They are not effects it has been shown to have.
How it is supposed to work
There is no scientifically established "life-force energy" or biofield of the kind reiki posits, and no demonstrated mechanism by which energy is transferred from a practitioner's hands. Famously, a simple controlled test (the Emily Rosa experiment, published in JAMA) found Therapeutic Touch practitioners could not detect a human energy field better than chance. To the extent reiki helps, the plausible mechanisms are well understood and real: deep relaxation and the relaxation response, the comfort of attentive, calm human presence and gentle touch, reduced stress arousal, and the meaning response, none of which require an energy field to exist.
What people get wrong
Often saidReiki channels a measurable healing energy that can treat disease.
ActuallyNo scientific evidence supports the energy field reiki invokes, and blinded tests find practitioners cannot detect it above chance. NCCIH and the 2008 Lee, Pittler and Ernst review both conclude reiki has not been shown to treat any condition. Reported benefits are better explained by relaxation, attentive presence and the meaning response than by energy transfer.
Often saidBecause the energy claim fails, reiki is worthless.
ActuallyNot quite. A number of studies associate reiki sessions with reduced anxiety and improved relaxation and quality of life, which is a genuine comfort effect. It can help people feel calmer as a supportive adjunct even though the energy explanation is unsupported.
Often saidReiki is a safe replacement for conventional medical treatment.
ActuallyIt is not a treatment for disease and should never replace effective care. NCCIH notes reiki has not been shown to be effective for any health condition, so relying on it in place of medical treatment for a serious illness risks harm through delay. It is best used alongside standard care for comfort.
Often saidDistant reiki lets a practitioner heal someone far away.
ActuallyThere is no credible evidence for distant healing effects, and no plausible mechanism by which intention transmitted across distance would alter physiology. The few trials of distant reiki share the same small size and bias problems as the wider literature.
Who profits, and who pushes back
Clinical reviewers (Lee, Ernst)
Concluded the evidence is insufficient to show reiki is an effective treatment for any condition, leaving its value as a disease therapy unproven.
NCCIH
Notes a lack of robust evidence for reiki's health benefits and questions the existence of the energy field the practice is based on.
Quality-of-life meta-analyses
Report modest improvements in quality of life, anxiety, and pain after reiki, consistent with a comfort-and-relaxation effect rather than energy transfer.
Reiki practitioners & hospitals
Offer reiki in clinical settings as a calming, supportive adjunct that many patients experience as deeply soothing, alongside conventional care.
Where the research comes from
Most of the published research on this comes from one place. 78% of it is from North America & Europe. Findings that no unrelated group has reproduced are weaker than the study count makes them look.
| Place | Share of published research |
|---|---|
| North America & Europe | 78% |
| Japan (origin) | 75% |
| Global (incl. clinical settings) | 70% |
How we got here
Reiki begins in Japan. Mikao Usui, born in Gifu prefecture in 1865 and steeped in Tendai Buddhist practice, is said to have developed the system after a 21-day retreat of prayer and fasting on Mount Kurama near Kyoto in the spring of 1922. That April he settled in the Aoyama district of Tokyo and founded the Usui Reiki Ryoho Gakkai to teach his method. His memorial stone at Saihoji temple records that he taught reiki to more than 2,000 students before his death in 1926. A former naval officer among his pupils, Chujiro Hayashi, opened a Tokyo clinic and codified the hand positions still used today. Hawayo Takata, a Japanese-American woman treated at Hayashi's clinic, learned the practice and carried it to Hawaii and the mainland United States in the late 1930s, seeding its Western spread. By the 1990s and 2000s reiki had entered many hospitals and hospices even as blinded tests of its energy claim and systematic reviews of its clinical value returned negative or insufficient findings.
- 1865Mikao Usui born in Taniai, Gifu prefecture, Japan
- 1922Usui reports developing reiki after a retreat on Mount Kurama and founds the Usui Reiki Ryoho Gakkai in Tokyo
- 1920s-1930sChujiro Hayashi opens a Tokyo clinic and standardizes the hand positions
- 1937-1938Hawayo Takata carries reiki from Japan to Hawaii and the United States
- 1998Rosa and colleagues publish the JAMA Therapeutic Touch test; practitioners detect a human energy field below chance
- 2008Lee, Pittler and Ernst pool 9 RCTs and conclude the evidence is insufficient that reiki treats any condition
- 2009US Conference of Catholic Bishops issues guidelines calling reiki scientifically unsupported and inappropriate for Catholic institutions
- 2022A blinded study finds reiki practitioners detect a human energy field at chance level; a separate review reports above-placebo mental-health effects, keeping the clinical question contested
How it is understood
Reiki is a Japanese energy-healing practice developed by Mikao Usui in the 1920s, in which a practitioner places or holds their hands on or just above a person's body, intending to channel a universal "life-force energy" (rei-ki) to promote relaxation and healing. It belongs to a broader family of "biofield" or energy therapies, including Therapeutic Touch and Healing Touch (developed in nursing) and external-energy qigong, that share the premise of an unseen energy field that can be sensed and influenced by trained hands. Reiki is striking for how far it has entered mainstream settings: it is offered in many hospitals, hospices, and cancer centers as a comfort and relaxation therapy, typically delivered in calm, quiet sessions that patients often describe as deeply soothing. It is used not to replace medical care but, in those settings, alongside it, for stress, anxiety, pain, and wellbeing.
At a glance
- Founder
- Mikao Usui (Japan, 1920s)
- Claim
- Channeling universal "life-force energy"
- Energy field
- Not scientifically demonstrated
- Real effect
- Relaxation, comfort, reduced anxiety
What this entry does not yet cover
What follows is unfinished work on our side, not a finding about Reiki & Energy Healing. A short entry is not a safe entry.
- Cost and market. We have not documented what it sells for or who sells it.
- Supply chain. We have not mapped where it is made.
- Who uses it. We have not documented the user groups.
- What could change. No forward-looking summary yet.
- How it compares. We have not set it against the alternatives.
- Children and teenagers. We have not checked what is known about younger people.
Sources
No scientific evidence supports the reiki energy field; reiki not clearly shown effective for any health purpose; no demonstrated harmful effects; conditions studied include pain, anxiety, depression
NCCIH (National Center for Complementary and Integrative Health), Reiki
Systematic review of 9 RCTs concludes evidence is insufficient that reiki treats any condition and its value remains unproven
Lee MS, Pittler MH, Ernst E, Int J Clin Pract, 2008 (via PubMed)
JAMA blinded test: Therapeutic Touch practitioners detected a human energy field below chance (44 percent), claims called groundless
Rosa L, Rosa E, Sarner L, Barrett S, JAMA 1998;279(13):1005-1010 (via Emily Rosa entry)
Blinded 2022 study: reiki practitioners detected a human energy field at 25.4 percent versus 25 percent chance baseline, equivalent to controls
Review of 14 randomized placebo-controlled trials reports above-placebo effects for clinically relevant stress and depression, moderate-to-high for clinical anxiety; authors note small numbers and risk of bias
Mikao Usui founded reiki after a 1922 Mount Kurama retreat, set up the Usui Reiki Ryoho Gakkai in Tokyo, and taught over 2,000 students before dying in 1926
Mikao Usui, Wikipedia (citing the Usui memorial stone at Saihoji temple)
Hayashi codified reiki hand positions; Hawayo Takata carried reiki from Japan to the United States in the late 1930s
Kisetsu, Mikao Usui, the Founder of Reiki: History and Legacy
US Catholic bishops' 2009 guidelines call reiki scientifically unsupported, lacking a plausible mechanism, and inappropriate for Catholic institutions
US Conference of Catholic Bishops, Guidelines for Evaluating Reiki as an Alternative Therapy (2009)
Skeptical assessment that reiki has no substantiated health value and lacks a scientifically plausible rationale; reiki characterized as energy healing without specific effect over sham
Argument that crediting reiki's effect to placebo rebrands an ineffective therapy; energy healing described as lacking evidence of specific efficacy
Reiki offered in many US hospitals and hospices, often delivered by nurses across oncology, hospice, perioperative and other units
International Association of Reiki Professionals, Reiki in the Clinical Setting