Red Light Therapy for Arthritis: Does It Actually Work?
If you live with arthritis—whether it's the slow ache of osteoarthritis or the sudden flare of rheumatoid arthritis—you've probably tried everything. Heat pads. Ice. NSAIDs. Maybe even injections. And you've probably noticed that nothing offers lasting relief without side effects.
Red light therapy (RLT) is a non-invasive, drug-free option that's been studied for joint pain since the 1980s. It uses specific wavelengths of red and near-infrared light to penetrate tissue and stimulate cellular activity in inflamed joints. The result, according to a growing body of research, is reduced pain and improved mobility for many people with both osteo- and rheumatoid arthritis.
Here's what the science says, how to use red light therapy at home, and which device matters most.
What is arthritis (briefly)?
Arthritis is an umbrella term for over 100 conditions that cause joint inflammation and pain. The two most common forms are:
- Osteoarthritis (OA) — "wear and tear" arthritis. Cartilage in joints (often knees, hips, hands) breaks down over time, causing bone-on-bone pain and stiffness. Affects 32+ million U.S. adults.
- Rheumatoid arthritis (RA) — an autoimmune disease where the immune system attacks joint linings. Causes swelling, deformity, and systemic inflammation.
Both share a common feature: chronic inflammation. And that's where red light therapy comes in.
How red light therapy works for joint pain
When red light (typically 630–660nm) and near-infrared light (810–850nm) hit tissue, photons are absorbed by a key enzyme in cells called cytochrome c oxidase. This sets off a cascade:
- ATP production increases — cells make more energy
- Nitric oxide is released — improving local blood flow
- Inflammatory markers drop — including TNF-α and IL-6
- Tissue repair speeds up — supporting collagen synthesis
For arthritic joints, the practical effect is less inflammation, less pain, and improved range of motion.
What the research says
A 2019 systematic review in Lasers in Medical Science looked at 22 randomized controlled trials of light therapy for knee osteoarthritis. The conclusion: red and near-infrared light significantly reduced pain compared to placebo, with effects lasting up to 12 weeks post-treatment.
A separate meta-analysis of rheumatoid arthritis trials found that low-level laser therapy reduced morning stiffness by an average of 27.5 minutes and improved hand grip strength.
While individual results vary, the body of evidence supports red light therapy as a safe adjunct to conventional arthritis care.
Best AWA device for arthritis
For arthritis, the key is treating the affected joints with adequate light dose. Smaller handheld devices can work for single joints, but they require holding the device for 15+ minutes per session.
For most people, a full-coverage panel is more practical:
AWA FX500 Red Light Therapy Panel — Clinical wavelengths (660nm + 850nm), large treatment area, FSA/HSA eligible. Treat both knees, both hands, or your lower back in one session. Built for daily home use.
If you primarily have hand arthritis, the AWA Red Light Therapy Gloves wrap the panel around your hands—ideal for treating both hands simultaneously while you read or watch TV.
For knee, shoulder, or smaller joint focus: AWA FX300 offers the same wavelengths in a more portable format.
How to use red light therapy for arthritis
- Distance: 6–12 inches from skin. Closer = higher dose.
- Duration: 10–20 minutes per joint area
- Frequency: Daily for first 30 days, then 3–5 times per week for maintenance
- Bare skin: Light should hit skin directly. Roll up sleeves or wear shorts.
- Timing: Many people see best results when used before activity (warms up joint) and after activity (recovery)
Most users report noticeable improvement in pain and stiffness within 2–4 weeks of consistent use.
Is red light therapy safe?
Red and near-infrared light at the wavelengths used in home devices is non-ionizing and non-thermal. There's no UV exposure, no risk of skin cancer, and no known long-term side effects. You can safely use it daily.
That said, if you have a photosensitivity condition, are taking photosensitizing medications, or are pregnant, talk to your doctor first.
FAQ
How long until I feel relief?
Most users report some pain reduction within the first week. Significant improvement typically takes 2–4 weeks of consistent daily use.
Can I use red light therapy with my current medications?
Red light therapy is generally compatible with most arthritis medications, including NSAIDs and DMARDs. It's a complementary therapy, not a replacement. Talk to your doctor about your specific medications.
Does it work for both osteoarthritis and rheumatoid arthritis?
Research supports both. The mechanism—reducing inflammation and improving cellular energy—applies to both conditions.
Is the AWA FX500 covered by HSA/FSA?
Yes. The AWA FX500 is FSA/HSA eligible. Learn how to use HSA/FSA funds for red light therapy.
Can I overdo it?
Sessions over 20 minutes per area don't add benefit and may temporarily reduce effects (an effect called the "biphasic dose response"). Stick to the protocol above.
The bottom line
Red light therapy isn't a cure for arthritis—but a growing body of clinical evidence suggests it can meaningfully reduce pain, stiffness, and inflammation, with virtually no side effects. For people looking for a drug-free, daily-use option to manage joint pain at home, it's worth considering.
Ready to start? Explore the AWA FX500—our most popular panel for full joint coverage. FSA/HSA eligible, 60-day risk-free returns.