Reiki has been studied and its effectiveness has been documented in various clinical studies and articles. Some of these studies have shown that reiki sessions can improve mental and physical health. Additionally, sound therapy has also been found to be effective in reducing stress and promoting relaxation. Research has also shown that reiki can help reduce pain, improve sleep quality, and reduce symptoms of depression and anxiety. Furthermore, reiki can also help improve overall energy levels and mental clarity. These studies and articles provide evidence of the positive effects of reiki and sound therapy on overall health and well-being.