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What Is Reiki?

Reiki is a Japanese energy healing technique developed in the 1920s by Mikao Usui, a Buddhist practitioner from Kyoto. The word itself combines two Japanese characters: rei (universal) and ki (life energy). The basic idea? A trained practitioner channels this universal life energy through their hands and into the recipient’s body, promoting relaxation, stress reduction, and — according to practitioners — physical and emotional healing.

Here’s where things get interesting, and a little controversial. Reiki has millions of practitioners worldwide. Over 60 hospitals in the United States offer reiki as a complementary therapy. Yet the scientific community remains deeply skeptical about the mechanisms behind it. There’s no measurable “life energy” that instruments can detect, and clinical trials have produced mixed results at best.

So what’s actually going on? Let’s dig into the history, the practice, and what the evidence says.

The Origins of Reiki

Mikao Usui didn’t invent reiki out of thin air. He drew from existing Japanese and Chinese traditions around ki (or chi in Chinese) — the concept that vital energy flows through all living things. In 1922, after a period of fasting and meditation on Mount Kurama near Kyoto, Usui reported a profound spiritual experience that gave him the ability to heal through touch. He opened a clinic in Tokyo that same year.

Usui trained roughly 2,000 students before his death in 1926. Among them was Chujiro Hayashi, a retired naval officer who systematized the hand positions and created a more structured treatment protocol. Hayashi, in turn, trained Hawayo Takata, a Japanese-American woman from Hawaii, in the late 1930s.

Takata brought reiki to the West. Between the 1940s and her death in 1980, she trained 22 reiki masters in North America. From those 22, the practice spread worldwide. Today, there are estimated to be over 4 million reiki practitioners across the globe.

One thing worth noting: the reiki practiced today in the West often looks quite different from what Usui originally taught. Various schools and traditions have added their own techniques, symbols, and philosophies over the decades.

How a Reiki Session Actually Works

If you’ve never experienced a reiki session, here’s what to expect. You lie fully clothed on a massage table in a quiet room — usually with dim lighting and soft music. The practitioner places their hands gently on or slightly above your body in a sequence of specific positions, typically starting at the head and working down to the feet.

Each hand position is held for about 3 to 5 minutes. A full session covers 12 to 15 positions and lasts 60 to 90 minutes. The practitioner’s hands might rest on your forehead, the sides of your head, your throat, chest, abdomen, knees, and feet.

What do people feel during a session? Reports vary enormously:

• Warmth or tingling in areas where the practitioner’s hands are placed
• Deep relaxation — many people fall asleep
• Emotional release — some recipients cry or experience strong feelings
• Nothing at all — which practitioners say is perfectly normal and doesn’t mean “it’s not working”

The practitioner, meanwhile, often reports sensing energy shifts, temperature changes, or subtle vibrations in their hands. Skeptics point out that these sensations could easily be explained by normal physiological processes — body heat, blood flow, the relaxation response.

The Three Levels of Reiki Training

Reiki practitioners advance through three degrees, each passed on through an “attunement” — a ceremony where a reiki master opens the student’s energy channels.

First Degree (Shoden) focuses on self-healing. Students learn the history of reiki, the basic hand positions, and how to channel energy for themselves and others through direct touch. This level typically requires 8 to 12 hours of training.

Second Degree (Okuden) introduces three sacred symbols that practitioners draw or visualize to focus energy, provide emotional healing, and — here’s where it gets really interesting — send reiki across distances. Distance healing is one of reiki’s most controversial claims. Practitioners say they can channel energy to someone miles or even continents away. The training usually requires another 8 to 12 hours, plus months of practice at the first-degree level.

Third Degree (Shinpiden) is the master level. Students receive the master symbol, learn to perform attunements, and can now train others. Some traditions split this into two sub-levels: practitioner-master and teacher-master. Reaching this level often takes years of dedicated practice.

What Does the Science Say?

This is the part that really matters — and frankly, the evidence is complicated.

A 2017 review published in the Journal of Evidence-Based Complementary & Alternative Medicine analyzed 13 randomized controlled trials and found that reiki showed some positive effects on pain, anxiety, and depression. But the authors noted that most studies had small sample sizes and methodological weaknesses.

The National Center for Complementary and Integrative Health (NCCIH), part of the U.S. National Institutes of Health, states plainly: “There is no scientific evidence that reiki is effective for any health-related purpose.”

A 2008 systematic review in the International Journal of Clinical Practice looked at 205 reiki studies and concluded the evidence was “insufficient to suggest that reiki is an effective treatment for any condition.”

So why do so many people swear by it? A few possible explanations:

The relaxation response. Lying quietly in a peaceful room for an hour while someone places warm hands on you is inherently calming. Your parasympathetic nervous system kicks in — heart rate drops, breathing slows, muscles relax. This alone can reduce pain perception and anxiety. You don’t need invisible energy to explain it.

Therapeutic touch and attention. Human touch is powerful. Studies consistently show that compassionate physical contact reduces cortisol levels and increases oxytocin. A reiki session provides extended, focused, caring touch — something many people rarely experience.

The placebo effect. Believing that a treatment will help you actually changes your neurochemistry. Placebo responses can reduce pain by 15-30% in many studies. The ritual, the practitioner’s confidence, and the client’s expectations all contribute.

Selection bias. People who seek out reiki tend to be open to alternative approaches and may be more attuned to subtle changes in how they feel. They’re also more likely to report positive outcomes.

Reiki in Hospitals and Healthcare

Despite the lack of strong evidence, reiki has made surprising inroads into conventional healthcare. As of 2023, more than 60 hospitals and healthcare facilities in the U.S. offer reiki as a complementary service. The Cleveland Clinic, Johns Hopkins, and Memorial Sloan Kettering have all incorporated reiki programs.

Why would evidence-based medical institutions offer a treatment with limited scientific backing? The reasoning is practical: patients report feeling better, there are essentially no side effects, and it doesn’t interfere with conventional treatments. Several hospitals have conducted their own informal studies showing reduced anxiety and pain in patients who receive reiki alongside standard care.

The key word there is “alongside.” No reputable hospital offers reiki as a replacement for surgery, chemotherapy, or medication. It’s positioned strictly as a complement — something that helps patients cope with the stress and discomfort of illness and treatment.

Common Misconceptions About Reiki

“Reiki is a religion.” It’s not. While Usui drew from Buddhist and Shinto traditions, reiki itself has no dogma, no required beliefs, and no worship component. Practitioners come from every religious background — and from no religious background at all.

“You have to believe in it for it to work.” Practitioners claim reiki works regardless of belief. Of course, this makes it harder to study scientifically, since you can’t separate the treatment effect from the placebo effect if belief doesn’t matter.

“Reiki can cure diseases.” No credible reiki practitioner makes this claim. Responsible practitioners position reiki as a relaxation technique that may support healing, not a cure for cancer, diabetes, or any other disease. Be very cautious of any practitioner who claims otherwise.

“Reiki and massage are the same thing.” They’re fundamentally different. Massage involves physical manipulation of muscles and tissues. Reiki involves light touch or no touch at all. Massage therapists need extensive anatomy training and state licensure. Reiki practitioners do not.

How to Find a Reiki Practitioner

If you’re curious about trying reiki, here’s some practical advice. Look for practitioners certified through recognized organizations like the International Association of Reiki Professionals (IARP) or the International Center for Reiki Training. Ask about their training — specifically, which degree they’ve completed and how long they’ve been practicing.

A good practitioner will:

• Never tell you to stop taking medication or skip medical appointments
• Be upfront about what reiki can and cannot do
• Make you feel comfortable and answer your questions without pressuring you
• Have a clean, professional space

Sessions typically cost between $50 and $100 for an hour, though prices vary widely by location. Some practitioners offer sliding-scale fees.

The Bottom Line

Reiki occupies a peculiar space in modern health culture. It has no strong scientific evidence supporting its core mechanism — the channeling of universal life energy — yet millions of people find it genuinely helpful. The relaxation benefits are real, even if the explanation for why they occur differs between practitioners and scientists.

If you approach reiki as a pleasant, low-risk relaxation practice rather than a medical treatment, you’re unlikely to be disappointed. Just keep your regular doctor in the loop, maintain your prescribed treatments, and stay skeptical of anyone who promises miracle cures.

The honest truth? We don’t fully understand why some people feel so much better after reiki. Maybe the mechanism matters less than the outcome. Or maybe — just maybe — there’s something going on that science hasn’t figured out how to measure yet. Either way, the conversation is far from settled.

Frequently Asked Questions

Does reiki actually work?

Research results are mixed. Some studies show reiki can reduce anxiety, pain perception, and stress levels, but most scientific reviews conclude the evidence is inconclusive. The National Center for Complementary and Integrative Health states there is no strong scientific evidence that reiki is effective for any health condition. Many recipients report feeling deeply relaxed, though critics attribute this to the placebo effect and the calming environment of a session.

Is reiki safe?

Reiki is generally considered safe because it involves no physical manipulation, drugs, or invasive procedures. The main risk is not from reiki itself but from using it as a substitute for proven medical treatments. Most healthcare professionals recommend reiki only as a complement to — not a replacement for — conventional medicine.

How long does a reiki session last?

A typical reiki session lasts between 60 and 90 minutes. The practitioner places their hands on or slightly above the body in a series of 12 to 15 positions, holding each for 3 to 5 minutes. Some practitioners offer shorter 30-minute sessions focusing on specific areas.

Do you need any special qualifications to practice reiki?

Reiki has no government-regulated licensing in most countries. Practitioners are trained through a system of three levels, or degrees, passed down from master to student through attunement ceremonies. While anyone can technically learn reiki, reputable practitioners complete all three levels of training and accumulate significant hands-on experience.

Further Reading

• NCCIH: Reiki
• International Association of Reiki Professionals
• Mayo Clinic: Reiki Overview