Photobiomodulation: Can Light Help Your Body Heal Faster?

I see a lot of patients who are frustrated. They've tried rest, ice, anti-inflammatories — and they're still hurting. When I introduce laser therapy, the most common reaction is skepticism. Light? For healing?

But the science behind it is more solid than most people expect — and the results I've seen in practice have made it one of my go-to tools for stubborn injuries.

Quick Take

Photobiomodulation uses near-infrared light to stimulate your body's own healing systems — reducing inflammation, accelerating tissue repair, and decreasing pain. It's drug-free, comfortable, and backed by a growing body of research.

How Light Therapy Actually Works

Every cell in your body contains mitochondria — the structures that produce cellular energy. Near-infrared light at specific wavelengths can penetrate through skin into deeper tissues: muscles, tendons, ligaments, and joints. When it reaches those cells, it triggers them to produce more ATP, the molecule that powers cellular repair.

The result is a cascade of biological effects: reduced inflammation, improved local circulation, and faster tissue regeneration. Your body was already trying to heal — this just helps it do so more efficiently.

One of the most effective wavelengths for this purpose is 980 nm near-infrared light, delivered through a Class IV medical laser. At this wavelength, light penetrates significantly deeper than consumer red-light panels, which mostly affect the skin surface. The 980 nm range is particularly effective at reaching musculoskeletal tissue — which is where most of the injuries I treat actually live.

What Conditions Respond Well?

Laser therapy is commonly used for:

•       Ankle sprains and ligament injuries

•       Muscle strains

•       Tendon injuries — including tennis elbow, Achilles tendinopathy, and rotator cuff irritation

•       Plantar fasciitis

•       Bone stress injuries and stress fractures

•       Chronic joint inflammation

•       Nerve irritation

Athletes use it for faster return-to-play, but I use it just as often with patients who simply want to get back to their regular lives — walking the dog, working in the garden, keeping up with their grandkids.

What to Expect During Treatment

Most patients describe it as comfortable and relaxing. You'll feel gentle warmth as the light is applied to the treatment area. Sessions are typically 5–10 minutes per area, and many people notice meaningful improvement within a handful of treatments.

There's no downtime. No needles. Nothing to recover from.

Who Should Not Receive Laser Therapy?

Laser therapy has a strong safety profile when performed by trained providers, but we always review your medical history first. Treatment is avoided over:

•       Known or suspected cancer in the treatment area

•       The thyroid gland

•       The eyes

•       The abdomen or low back during pregnancy

•       Areas of active bleeding

•       Certain rare photosensitive conditions

The Bottom Line

Photobiomodulation isn't magic — it's biology. It works by giving your cells the energy they need to do what they were already designed to do: heal.

If you've been dealing with a nagging injury and feel like you've hit a wall, it might be worth asking whether laser therapy is a fit for your situation. Sometimes recovery just needs a little help from the right wavelength of light.

— Dr. Deb