Key takeaways
- Blue light suppresses melatonin and can delay sleep.
- Blue light glasses may help, but evidence is mixed.
- Device settings and digital wind-down habits are equally important.

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Blue light suppresses melatonin production, the hormone that signals bedtime to your body. This disrupts your natural circadian rhythm, making you feel alert when you should be winding down for sleep.
Yes, wearing blue light glasses before bed can help block melatonin-suppressing light from screens. This may help you fall asleep faster and achieve better sleep quality.
Blue light glasses may help reduce insomnia symptoms by supporting natural melatonin production and maintaining healthy circadian rhythms. This can decrease the time needed to fall asleep and improve overall rest.
Blue light filter glasses are completely safe for daily use. They protect your eyes from prolonged screen exposure without negative side effects and may enhance comfort during evening screen time.
Stop using screens at least one to two hours before bedtime. This gives your body enough time to naturally increase melatonin production and prepare for quality sleep.
Most phones include night mode features that reduce blue light emission. While these built-in filters help, they may not completely eliminate blue light's sleep-disrupting effects on your circadian rhythm.
Limit evening screen time, use warm lighting after sunset, and get plenty of natural sunlight during the day. These habits support healthy circadian rhythms and reduce blue light's impact.
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