The Science, Spirit and Health Symposium wrapped up this weekend in Tucson, and brought together authors, scholars, practitioners and researchers to discuss ways of making energy healing more mainstream.

Energy healing is "one of the best kept secrets out there," said Dan Horner, conference organizer.

Horner said Americans spend about $7.8 billion each year on reiki - a Japanese technique - craniosacral - body work focused on the brain and spinal cord - music, massage and other types of energy therapies.

"Really, its like this quiet revolution that is going on," he said. "It's being added to hospitals...the University (of Arizona) Medical Center, they're using Reiki (as part of the healing process)...for people that have gotten through cancer.

Even physicians practicing more conventional, Western medicine have even begun suggesting that their patients receive energy work, he said.

Melinda Connor, Ph.D., an energy healing practitioner, said more than 400 studies have been published in the literature demonstrating the effectiveness of energy work.

She explained energy healing as, "manipulation of the charged field - the biofield - around the body, so a practice or a device that, somehow, affects what the field that is produced and extends past the surface of the body is doing."

Connor said practices, such as acupuncture and chiropractic, which were once considered alternative, have now become more mainstream, and are opening people's willingness to try therapies that focus on the energy system of the body, "whereas Western medicine focuses primarily on the chemical system of the body."