If you've spent any time researching options for joint pain, you've likely come across red light therapy, also called photobiomodulation. It's easy to be skeptical of a treatment that involves lying under red and near-infrared light with no needles, no pills, and no downtime. So what does the evidence actually say?
How the light reaches the joint
Near-infrared wavelengths penetrate further than visible red light, reaching past the skin into muscle, tendon, and the soft tissue surrounding a joint. That's the tissue where arthritis discomfort tends to originate, and it's why photobiomodulation has been studied specifically for musculoskeletal pain, including knee osteoarthritis.
What the research consistently shows
- It is cumulative, not instant. Benefit tends to build over a course of sessions rather than after a single visit, as the effect on circulation and tissue compounds over time.
- Consistency matters. Outcomes in studies are generally tied to regular, adequately dosed sessions over several weeks, not occasional use.
- It complements, rather than replaces, existing care. The studies with the best outcomes typically combine red light therapy with movement and your physician's care, not in place of it.
- Results vary by joint and severity. Depth of the joint, how long the condition has been present, and overall severity all affect what you can expect.
Setting realistic expectations
We'd rather be upfront than oversell a treatment. Red light therapy is best understood as support for your body's own repair processes: encouraging circulation, supporting cellular energy production, and helping modulate the low-grade inflammation common in arthritic joints. It's not a cure, and it works best as part of a broader plan guided by your physician.
If we don't think red light therapy is likely to help your particular situation, we'll tell you plainly at your consultation.