Do blue light glasses help you sleep better?
Effect of evening blue light blocking glasses on subjective and objective sleep in healthy adults: A randomized control trial.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Total sleep time was numerically shorter with blue light blocking glasses, both subjectively and objectively.
This goes against the common assumption that reducing blue light exposure should help people sleep longer and better, especially since blue light is known to suppress melatonin.
Practical Takeaways
Don’t rely solely on blue light blocking glasses to improve your sleep if you’re already healthy.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Total sleep time was numerically shorter with blue light blocking glasses, both subjectively and objectively.
This goes against the common assumption that reducing blue light exposure should help people sleep longer and better, especially since blue light is known to suppress melatonin.
Practical Takeaways
Don’t rely solely on blue light blocking glasses to improve your sleep if you’re already healthy.
Publication
Journal
Sleep health
Year
2021
Authors
Jeremy A. Bigalke, Ian M. Greenlund, Jennifer R Nicevski, J. Carter
Related Content
Claims (4)
Wearing blue light blocking glasses after 6 PM for a week doesn’t actually help healthy adults sleep longer or more soundly, according to wrist-worn sleep trackers.
Wearing blue light blocking glasses might actually make some people sleep a little less, even though they’re supposed to help. Both how people felt and sleep tracker data showed slightly shorter sleep, but the difference wasn’t strong enough to be sure it wasn’t just chance.
Wearing blue light blocking glasses every evening for a week might help healthy adults fall asleep a little faster and wake up less during the night.
Being around blue light at night, like from phones or screens, might keep your body from making the sleep hormone melatonin because it keeps stress hormone levels high, making it harder to fall and stay asleep.