Mechanisms of Laser Acupuncture – Hypotheses and Evidence

Abstract

Laser acupuncture, a rising complementary therapy, applies a low-intensity laser to acupuncture points, yet its underlying mechanisms remain unclear. Proposed hypotheses include modulation of cellular signaling, tissue repair, and immune modulation. Laser acupuncture may stimulate energy flow, neurotransmitter release, cellular changes, immune regulation, and neuroendocrine activity. Additionally, the biophoton theory suggests an involvement of ultra-weak photon radiation from cells. Litscher et al. explore these mechanisms through neurophysiological analysis, biochemical measurements, imaging techniques, and clinical trials. They documented subtle human brain responses following laser stimulation, potentially modulating the ascending reticular activating system. However, further research is needed to validate and expand these findings for broader clinical application of laser acupuncture.