The human body is not biologically silent.
Every moment, our cells are communicating. The heart generates electrical activity. The brain produces measurable electrical patterns. Nerves transmit electrochemical signals. Cells communicate through chemical messengers, mechanical forces, and electrical gradients. Our physiology is an extraordinarily complex network of information exchange.
It raises an intriguing question:
Could there be additional layers of biological signaling that we do not yet fully understand?
This question sits at the center of emerging research into the human biofield and biofield based therapies such as Reiki.
The idea of a biofield can sound unfamiliar, particularly within conventional medicine. It can also be presented in ways that go far beyond what current science can support. A responsible conversation about the biofield requires both curiosity and restraint.
We can explore what researchers have actually studied, what remains theoretical, and where Reiki fits into this evolving field.
What Is the Biofield?
The term biofield is used in complementary and integrative health research to describe fields of energy and information associated with living systems.
Importantly, biofield research is not one single scientific discipline with one universally accepted definition or mechanism. Researchers have used the term to encompass a range of phenomena and therapeutic approaches, including Reiki, Therapeutic Touch, Healing Touch, external qigong, and other practices.
A large scoping review published in 2025 identified 353 human studies involving biofield therapies, including 88 studies specifically involving Reiki. The research included randomized controlled trials, controlled clinical studies, and pre post studies across populations including healthy adults, people experiencing pain, and people with cancer.
That does not mean that biofield therapies have been scientifically proven.
It means something more modest and more interesting:
There is a substantial enough body of research for scientists to continue asking questions about these therapies.
The Human Body Already Produces Measurable Fields
There is nothing controversial about the fact that living organisms produce measurable physical signals.
The heart’s electrical activity can be measured with an electrocardiogram. Brain activity can be measured with electroencephalography. Nerve cells communicate through electrical and chemical processes.
These measurable physiological signals are sometimes brought into conversations about the biofield.
But this distinction matters:
The existence of measurable electrical activity in the human body does not demonstrate that Reiki works through those electrical signals.
It is one thing to establish that the body produces measurable electromagnetic activity. It is another to demonstrate that a Reiki practitioner intentionally changes that activity in a clinically meaningful way.
Those are separate scientific questions.
Where Does Reiki Fit?
Reiki is traditionally described as a practice in which the practitioner places the hands lightly on or just above the body with the intention of supporting the person’s natural healing response.
From the practitioner’s perspective, Reiki involves working with what is traditionally understood as life energy.
From the perspective of biomedical research, however, the mechanism remains unresolved.
The National Center for Complementary and Integrative Health notes that Reiki has been studied for conditions including pain, anxiety, and depression, but concludes that the existing research has not clearly established effectiveness for a health related purpose. NCCIH also states that there is currently no scientific evidence establishing the existence of the energy field proposed to play a role in Reiki.
That is an important limitation to acknowledge.
It does not mean that people’s experiences with Reiki are meaningless.
It means we should distinguish experience, clinical outcomes, biological mechanisms, and scientific proof.
What Has Biofield Research Found?
Research into biofield therapies has produced mixed results.
A systematic review examining 66 clinical studies reported evidence suggesting possible benefits for some outcomes, including pain and anxiety in certain populations, while also describing the overall evidence as requiring further high quality research.
A more recent evidence map identified hundreds of clinical studies across different biofield approaches. Nearly half of the studies reported positive findings across the outcomes examined, while others reported mixed or nonsignificant findings. The authors concluded that inconsistent reporting and methodological challenges continue to limit interpretation of the evidence.
This is exactly where careful language matters.
A positive clinical trial is not the same thing as proof of a proposed mechanism.
And an unknown mechanism is not automatically evidence that no effect exists.
The Mechanism Question
One of the most interesting questions in Reiki research is also one of the most difficult:
If people experience measurable changes following Reiki, what produces those changes?
There are many possibilities that researchers must consider.
The experience of lying quietly in a safe environment may influence physiology.
Human touch may influence perception and autonomic activity.
Focused attention may affect subjective experience.
The therapeutic relationship may matter.
Expectations and placebo effects may contribute.
Relaxation may produce physiological changes.
And it is also possible that there are mechanisms involved that current scientific models do not adequately explain.
Science does not have to choose one explanation before the evidence exists.
It can investigate each possibility.
Why the Biofield Matters to Integrative Medicine
The value of biofield research may ultimately extend beyond whether one particular explanation for Reiki is correct.
Healthcare is increasingly interested in the relationship between physiology, perception, stress, environment, therapeutic relationships, and patient experience.
Biofield research sits at an unusual intersection of these questions.
It challenges researchers to develop better ways of studying interventions that do not fit neatly into traditional pharmaceutical or procedural models.
It also challenges practitioners to become more rigorous in how they describe their work.
That means moving away from statements such as “science has proven Reiki works” when the evidence does not support such a conclusion.
It means being willing to say:
We have observed promising findings. We have questions worth investigating. And we still have much to learn.
What We Know and What We Do Not Know
At this point, several statements can reasonably coexist.
The human body produces measurable electrical and electromagnetic activity.
Biofield therapies have been studied in hundreds of human clinical studies.
Reiki has been investigated in randomized and controlled research.
Some studies report beneficial outcomes.
Other studies do not.
The quality and design of the studies vary considerably.
The biological mechanism proposed by Reiki practitioners has not been scientifically established.
More rigorous research is needed.
That may sound less exciting than claiming that Reiki has been “scientifically proven.”
In reality, it is much more interesting.
Because the scientific questions are still open.
The Future of Biofield Research
The future of Reiki research may depend less on trying to prove a predetermined explanation and more on asking better questions.
What outcomes change?
For whom?
Under what circumstances?
How large are those changes?
Are they clinically meaningful?
Can they be replicated?
What happens when appropriate sham controls are used?
Are physiological changes measurable?
And if they are, what mechanisms could explain them?
Those are the questions that can move Reiki research forward.
At Evergreen Reiki, we believe there is room for both curiosity and scientific humility.
Reiki does not need exaggerated claims to be worthy of investigation.
The human body is already more complex than we once understood.
Perhaps the most responsible approach is not to decide prematurely what Reiki is or is not, but to continue asking better questions about what happens when people receive it.
