[su_dropcap style=”default” size=”3″ class=””]E[/su_dropcap]volution is an incredibly smart mechanism, because it has to be. Natural selection dictates which genes proliferate, which die out, which are expressed, etc. Everything we are today we owe to evolution. Our ability to think and have visual minds, our hand-eye coordination, our vitamin production, and so much more. A healthy human body functions incredibly well and can ward off many ailments like high blood pressure, unstable glucose levels, and even cancer. Of course, in order to be healthy, the body needs regular sleep, and it helps tremendously to sleep in the dark.
During early evolution, we didn’t have artificial light from the TV, ceiling or light sockets keeping our bedrooms bright. We were out in the wilderness and in caves, and at best the brightest light we had was a flickering campfire or a full moon. So, our bodies evolved sleeping in the dark, and this is the time of night when the body does its best healing.
The Health Benefits of Sleeping in the Dark
The first thing you have to understand about sleeping in the dark is that light can actually act as a drug. When exposed to artificial light (LAN), the biochemical reaction that produces melatonin is interrupted. Melatonin is responsible for our sleep-wake cycles, regulated blood pressure and blood glucose, and a lot more. Then, you have the Suprachiasmatic Nucleus (SCN), which is a group of cells located in the hypothalamus, and they respond directly to light. So, for the best night’s sleep, it’s best to sleep in a room as dark as you can get it. Any artificial light can sabotage the healthful benefits of sleep.
In fact, some researchers have found that sleeping in the dark can actually prevent cancer. According to a 2005 issue of Cancer Research, sleeping in the dark actually promotes healthy blood levels of the aforementioned melatonin, and this can actually suppress the growth of breast cancer tumors in women. Getting a restful night’s sleep in a dark room has a direct effect against the growth of cancer tumors, and healthy levels of melatonin are vital to a person’s overall health.
It’s also more practical to sleep in the dark. Returning back to our roots, our bodies are simply programmed that way. We didn’t happen into waking with the sun to farm and hunt. It was beneficial. Way, way back, when we were only small mammals subject to being eaten by predators, it was best we slept and stayed safe at night. Our eyesight has always worked best in the daytime, and so nighttime was the best time for sleeping. While we have changed in a million ways over those millions of years, that aspect of our evolution hasn’t changed at all. For the best night’s sleep possible, sleeping in the dark is the way to go.
[su_divider divider_color=”#5fc7ae” link_color=”#5fc7ae”]