I just signed up, however I am not a shill. I am investigating the use of LED therapy for joint pain. Have not bought yet. I am 59 with bilateral knee replacements, and the recovery is no picnic. Change of barometric pressure is brutal. For me in the past, Syn-Visc was a waste of 12,000.00. NSAIAs produce results but after bone on bone, nothing is that effective. Steroid shots worked but you can’t ride that horse forever.
There are research reports on LED therapy:
https://www.jstage.jst.go.jp/article/islsm/23/4/23_14-OR-21/_article
http://www.sciencedirect.com/science/article/pii/S0004951414601276
http://link.springer.com/article/10.1007/s10439-011-0454-7#page-1
http://www.sciencedirect.com/science/article/pii/S1011134407001273
The research uses 680 and 684 nm laser, compared with placebo.
Results seem somewhat encouraging. Not many American studies. There may be something there, but like any treatment, it won’t work for anyone.
Do a search on Google Scholar. Remain skeptical.