Using full-spectrum lighting that mimics natural sunlight ensures a shift in circadian phase and better sleep quality
The study presents findings that with more frequent use of LED electric light mimicking natural sunlight in the morning and daytime hours, research participants shifted their circadian phases to earlier hours and improved their sleep quality. Consistent with other studies, inadequate exposure to daylight (or inadequate illumination and indoor light quality) has been shown to suppress melatonin levels at night, resulting in delayed circadian phase, more frequent awakenings during the night, overall poorer sleep quality and sleep deprivation.
Lower use of blue light filters during the day and higher use before sleep contributes to healthier sleep patterns
The results of this study on 301 Malaysians aged around 28 showed that lower use of blue light sunscreens during the day and more frequent use an hour before sleep showed an earlier circadian phase. At the same time, more frequent use of mobile phones before bedtime causes delayed circadian phase, reduced sleep quality and increased memory and concentration problems.
