Red Light Therapy for Sleep: Can It Actually Help You Sleep Better?
Red Light Therapy for Sleep: Can It Actually Help You Sleep Better?
Most people know that blue light from screens disrupts sleep by suppressing melatonin production. What fewer people know is that red and near-infrared light may support sleep through several different mechanisms — and that the research here, while emerging, points toward real benefit for some users. Here's what we know.
The Melatonin Connection
Melatonin production is suppressed by short-wavelength blue light (400–500nm) and supported by longer wavelengths. Red light at 630–700nm does not suppress melatonin production the way blue and green light do. Using red light in the evening — from lamps, therapy panels, or even screens in "night mode" — avoids the melatonin-suppressing effect of shorter wavelengths.
Some research suggests red light may actually stimulate melatonin production, though this effect requires more study. What's clearer is the absence of harm: using red light therapy in the evening is unlikely to disrupt your circadian rhythm the way other light sources do.
Sleep Quality Studies
A 2012 randomized controlled trial published in the Journal of Athletic Training found that basketball players who received full-body red light therapy showed significantly improved sleep quality (measured by the Pittsburgh Sleep Quality Index) and increased melatonin levels compared to controls. Players also showed improved endurance performance — suggesting the sleep benefit had performance implications.
The Cellular Energy Connection
Red light therapy's core mechanism — mitochondrial stimulation and increased ATP production — may also support sleep by improving cellular energy balance. Cells that are operating more efficiently may support the physiological processes involved in sleep onset and quality.
Practical Guidance
If you're using red light therapy to support sleep, evening sessions (2–3 hours before bed) may be optimal. Full-body treatment with an FX300 or FX500 panel, or a whole-body infrared session with the HL300 Sauna Blanket, are both practical options. See our full AWA device collection.