LLLT, also known as Photobiomodulation Therapy or Cold Laser Therapy (CLT), is the application of low power laser beams to enhance cellular functions. When laser light irradiates and penetrates the skin surface, light is absorbed by damaged cells, triggering a series of physiological changes. These are found to modulate cellular metabolism, which stimulate the immune system, reduce inflammation, accelerate the tissue healing processes and achieve pain relief.
Since Professor Mester discovered the therapeutic properties of laser light in 1967, there have been extensive studies exploring the benefits, techniques and optimal usage of low level laser therapy in treating various conditions. To date, over 110,000 published research articles are archived in the PubMed library.
Current users of LLLT include many prominent organisations around the world, all of whom recognise the benefits of LLLT and its enormous potential. These include top researching institutions, military programs, high performance sports teams and space exploration administrations.
Frequently asked questions

Please see below to see Frequently Asked Questions answered
Literatures/ articles about low level laser therapy (LLLT) or photobiomodultion (PBM) therapy can be found from professional/peer reviewed journals. Click here
Photobiomodulation (PBM) therapy is effective to drug cravings. A novel treatment that combines unilateral transcranial photobiomodulation (t-PBM) applied to the hemisphere for drug cravings. This paper reports the first double-blind, placebo-controlled study of unilateral t-PBM to a hemisphere with a more positive hemispheric emotional valence. That unilateral tPBM to the positive hemisphere is superior to that to the negative hemisphere, and the fact that unilateral tPBM was effective in reducing drug cravings. Click here
PBM with near infrared light (NIR) treats patients with major depression and anxiety brought in psychological benefits 2 and 4 weeks after a single treatment. At 2-weeks post treatment 6 of 10 patients had a remission of depression and 7 of 10 achieved a remission of anxiety. Patients experienced highly significant reductions in both HAM-D and HAM-A scores following treatment, with the greatest reductions occurring at 2 weeks. This small feasibility study suggests that NIR-PBM may have utility for the treatment of depression and other psychiatric disorders. Click here
BMJ sports medicine journal, systematic review of surgical and conservative interventions for frozen shoulder found “strong evidence” for LLLT. (2010). Click here
The International Association for the Study of Pain (Global Task force on musculoskeletal pain) found “strong evidence” for Low Level Laser Therapy on myofascial pain syndrome. (2010). Click here
The BMJ clinical evidence recommendations for tennis elbow 2011 now include LLLT. Click here
American Physical Therapy Association guidelines recommend LLLT for Achilles tendonitis. (2010) Click here
Lancet systematic review: “LLLT reduces pain immediately after treatment in acute neck pain and up to 22 weeks after completion of treatment in patients with chronic neck pain”. (2009) Click here
World Health Organisation (Bone and Joint Task Force) for neck pain Low Level Laser Therapy “more effective than no treatment, sham, or alternative interventions” 2008) Click here
In August 2010 The Lancet reported that the systematic review of LLLT for neck pain was in their top 20 most downloaded papers for 2010. Click here
Effect of NASA light-emitting diode irradiation on wound healing. Click here