Nighttime Lights Suppress Melatonin

Posted on Mar 31, 2013 in Research

If you’re seeking better sleep, try switching up your nighttime lightbulbs to lower wattages. In a Harvard Medical School study, people in a dimly lit room made the sleep hormone melatonin 2 hours before bedtime, while those in a brightly lit room didn’t make melatonin until 23 minutes before bedtime.

Other research has linked low melatonin levels to increased risk of hypertension, breast cancer, and type 2 diabetes, so this simple switch could make a big difference.