The potential of red light therapy to safeguard athletes' brains from repetitive impacts is a groundbreaking development in sports medicine. This innovative approach, which involves exposing the brain to powerful near-infrared light through the skull, aims to address the long-term brain health issues caused by repeated impacts.
The names may have evolved from punch-drunk syndrome to chronic traumatic encephalopathy (CTE), but the impact of these injuries is clear. More than 100 former NFL players have been diagnosed with CTE posthumously, highlighting the urgent need for effective prevention and treatment strategies.
But here's where it gets controversial: current therapies often focus on managing symptoms like headaches and balance issues that arise after the initial injury. Red light therapy, however, takes a proactive approach by targeting brain inflammation before symptoms even start.
A recent study involving 26 collegiate football players suggests that this therapy could significantly reduce brain inflammation over a football season. The results, published in the Journal of Neurotrauma, indicate that red light therapy may offer a promising solution to protect athletes' brains.
The study compared two groups: one receiving red light therapy through a light-emitting headset and nose clip, and the other receiving a placebo treatment with an identical device. Over 16 weeks, the players self-administered the therapy three times a week for 20 minutes per session.
The findings were striking. While the placebo group experienced increased brain inflammation over the season, as evidenced by MRI scans, the group using the active red light device showed no such increase. In fact, they appeared to be protected from inflammation in almost all regions of the brain.
Dr. Hannah Lindsey, the study's first author, expressed her initial skepticism: "There's no way this can be real," she said. But the results were indeed real, and the potential mechanism of action makes sense. Red light, when powerful enough, can penetrate the skull and reach the outer surface of the brain, and previous studies have shown that specific wavelengths of light can reduce inflammatory molecules.
While more research is needed, the researchers are becoming increasingly convinced of red light therapy's promise. Dr. Elisabeth Wilde, the senior author, admitted to initial skepticism but noted the consistent results across multiple preliminary studies.
The team is now embarking on a Department of Defense-funded randomized controlled trial involving 300 people with persistent symptoms from TBI or concussion. They aim to start recruitment in early 2026, focusing on first responders, veterans, and active-duty service members.
Dr. Carrie Esopenko, the study's second author, hopes that these results will contribute to safer sports participation across all ages and sports. "This really feels like part of the hope for protecting the brain that we've been searching for," she said.
The full study, titled "Transcranial Photobiomodulation Promotes Neurological Resilience in Current Collegiate American Football Players Exposed to Repetitive Head Acceleration Events," is available in the Journal of Neurotrauma.
The research was supported by various grants from Brigham Young University (BYU) and its departments, with Dr. Lawrence Carr serving as a consultant for Vielight, Inc., the manufacturer of the light-emitting devices used in the study.
