Red light therapy (RLT), also known as low-power laser therapy, has been used for over three decades to treat various health concerns. From reducing pain and inflammation to improving skin conditions, it is widely adopted in medical and cosmetic settings. But does the science back its increasing popularity?

This therapy works by using red or near-infrared light to stimulate cellular activity, enhancing blood flow and tissue repair. It has been clinically proven to help with pain relief, wound healing, and recovery from cancer treatments, particularly by alleviating the side effects of radiation and chemotherapy. Additionally, research supports its effectiveness in managing conditions like tennis elbow, back pain, and diabetic ulcers.

Beyond these well-documented benefits, RLT is also marketed for treating conditions like Parkinson’s, Alzheimer’s, fibromyalgia, and cardiovascular issues. However, scientific evidence in these areas remains limited, and experts caution against overhyping its capabilities.

Commercially, RLT devices range from powerful laser treatments in medical settings to LED-based home devices and beauty salon treatments. While LED devices are considered safe with proper training, lasers should only be used by professionals due to potential risks.

The FDA is working toward stricter regulations for these devices to ensure safety and efficacy. As research evolves, RLT may prove to be a valuable therapeutic tool—but distinguishing science from marketing hype is crucial for consumers.