Research suggests that red light therapy (620-850nm) may help regulate circadian rhythms, increase melatonin production, and improve sleep quality. Unlike blue light, which disrupts sleep cycles, red and near-infrared light have been studied for their potential to enhance deep sleep and reduce nighttime awakenings.
Key Findings from Multiple Studies:
- A 2012 study found that athletes exposed to red light therapy (670nm) for 14 days experienced significantly improved sleep quality and increased melatonin levels.
- A 2019 review concluded that red light exposure in the evening helped regulate circadian rhythms and improve overall sleep duration.
- A 2021 study reported that RLT reduced symptoms of insomnia in individuals with sleep disorders, likely due to its calming effect on the nervous system.
- Research suggests that red light therapy before bedtime may help trigger natural melatonin release, supporting a more restful sleep cycle.
Implications:
These findings suggest that red light therapy between 620-850nm may be beneficial for individuals struggling with insomnia, disrupted sleep cycles, or low melatonin production. Regular evening use may help promote deeper, more restorative sleep.