Science and Reiki are a difficult mix; therefore, scientists who want to study this phenomenon are generally isolated and stereotyped as too weird, if not crazy.
This is why I consider the ones that have the courage to do it, as brave pioneers that overlooked the risk of losing prestige and/or status. (I know there are many low-quality studies and quackery in this area of research as well).
So far we know that biofields, or electromagnetic energy human fields, are a strong and vital part of ourselves. But the specific and exacts characteristics or physiology remain still unclear.
First, we must shift some paradigms about basic human physiology and study and integrate some concepts like semiconduction, tensegrity and the electromagnetic frequencies of the body.
The Living Matrix
A new concept regarding semiconduction, tensegrity, and biologic liquid crystals; and as a result of those characteristics, the body communicates through connective tissue and the cellular cytoskeleton.
This concept gives insight about how acupuncture and several alternative therapies work, and their intrinsic relationship with the electrical body.
Extremely low frequencies
Evidence suggests that healing energies are set in the 2-20 Hertz range. A common pattern is the specific 7,83 Hz frequency. This one has been detected in some studies regarding energy healing, and is also the same fundamental frequency of the Schumann Resonances.
In conclusion, the standarization of a Reiki randomized controlled trial is still far from arriving, because scientists are still approaching this phenomenon from different angles and then determine which might give more information about it.