Tag Archives: Light

How Light Affects Sleep

light on in bedroom

You’ve probably heard people who work late night shifts in hospitals, fire stations, restaurants, or on the road protecting our streets talk about how light during the day has a negative impact on their ability to get a decent amount of restful sleep. But, did you know there is a real reason behind it? It’s not merely a preference for darkness that’s robbing them of the recuperative sleep they need in order to wake up refreshed and ready to face the day. But why does light have such a profound impact on sleep and what can people who work these necessary late shifts do to get the kind of sleep they need?

Why Does Light Negatively Impact Sleep?

“In the presence of light, your brain will not produce melatonin,” says Dr. Michael Breus, PhD, Sleep Specialist: On the surface that doesn’t seem like such a profoundly negative thing. However, melatonin is one of the vital hormones that plays a significant role in helping people not only fall asleep but also to remain asleep throughout the night. If a room has too much light, that makes things much more difficult for anyone looking to get a proper amount of sleep.

How Different Lighting Effects Your Brain Chemistry and Sleep

moon light

Human beings are built to respond to the natural light and dark cycle of the day. It makes sense that we would have evolved this way. After all, unlike cats, our eyes aren’t equipped to see very well in the dark. So, we had to do our hunting in the daytime and, the earlier we started looking for food, the more food we’d find before the day was over. As a consequence, our brains are more alert during daytime hours. As the sun sets, we start to slow down. Even if you consider yourself a night person, your productivity still wanes with the loss of daylight. Of course, nowadays we are surrounded by artificial light. It makes sense that this light might wreak some havoc on our sleep/wake patterns.