How Does Class 4 Laser Therapy Help with Inflammation and Pain Relief?

The Science Behind Laser Therapy

Class 4 laser therapy works through a process called photobiomodulation. When light energy from the laser enters the body, it interacts with cells in the mitochondria—the part of the cell responsible for producing energy. This light stimulates the production of adenosine triphosphate (ATP), which fuels tissue repair and regeneration.

As the cells become more efficient, they reduce inflammation, clear out damaged tissue, and support faster recovery. This process also helps normalize nerve function, which can decrease pain sensitivity over time.

How It Reduces Inflammation

Inflammation is the body’s natural response to injury, but when it becomes chronic, it delays healing. Class 4 laser therapy targets inflammation at its source by:

Increasing circulation: Improves blood flow and nutrient delivery to damaged tissue.
Reducing swelling: Enhances lymphatic drainage to remove excess fluid.
Decreasing inflammatory chemicals: Lowers cytokine activity that triggers pain and stiffness.
Accelerating repair: Promotes faster regeneration of muscle, tendon, and ligament tissue.

This combination allows the body to move from an inflamed, painful state into active healing more quickly.

Pain Relief Without Medication

Class 4 lasers help relieve pain naturally by stimulating the release of endorphins and enkephalins, the body’s natural pain-relieving chemicals. As inflammation decreases and circulation improves, nerve irritation lessens, providing both immediate and long-term relief.

Because it’s non-invasive and drug-free, this therapy is an ideal option for patients who want to avoid pain medication or surgery.

Expert Recommendation

According to Dr. Jeremy and Dr. Libby Darnell of Freedom Chiropractic Spine & Injury Center in Spring Hill, TN, Class 4 laser therapy is one of the most effective tools for managing pain and inflammation naturally. Their clinic uses this technology to help patients recover from injuries, arthritis, and chronic pain while improving long-term function and mobility.