That means if your normal bedtime is midnight, your body will not start producing melatonin before 10 p.m., so even if it’s winter and it’s dark by 5 p.m., there should be no adverse affects on your sleep patterns provided you stop using your devices two hours before going to bed. Revell says that since our bodies only start to produce melatonin about two hours before our normal bedtime, there is no need to shun our devices just because it’s dark outside. Don’t stop using your devices at night–just stop two hours before going to bed However, Figueiro says “studies in humans have shown that rotating shift workers working at least 20 to 30 years on rotating shifts are at higher risks for breast and colorectal cancer.” Also, human research indicates that sleeping only four hours a night can result in more hunger and higher glucose levels.īut while there is no current “fix” for stopping our blue light–emitting devices from messing with our melatonin production–and little hope people will stop using their devices in bed–both Revell and Figueiro say there are steps people can take to limit the negative effects their devices have at night.ġ. If that behavior goes on for years, Figuerio says it can lead to diseases like diabetes, obesity, and even cancer, although she also notes that the disease studies have only used animal models so far. “Disruption of the melatonin cycle resulting from irregular light/dark pattern exposure or exposure to light at the wrong time can lead to circadian disruption, which has been associated with poor sleep and poor performance,” she says. ![]() In diurnal species, like humans, melatonin signals sleep and the body prepares to switch from daytime to nighttime mode.” “It is known as the ‘darkness hormone’ because it tells the body that it is nighttime. Mariana Figueiro, program director at the Lighting Research Center at Rensselaer Polytechnic Institute in Troy, New York. High Quality There’s no finer marine electrical parts on the market. Bluewater has years of experience bringing the finest quality and durability to marine electronics. “Melatonin is produced by the brain at night and under conditions of darkness,” says Dr. Bluewater Remote Battery Switch Performance High Performance marine applications need high performance electronics to go along with it. And it’s that blue wavelength light that wreaks havoc on our body’s melatonin production. Unfortunately, virtually every device we own, from the latest iPad to the Samsung Galaxy Note to Amazon’s Kindle, has light-emitting diodes that give off blue wavelength light. “We know that it is blue wavelength light that is particularly effective at increasing alertness and affecting our body clock, and so we need to minimize the blue/green wavelengths we are exposed to.” ![]() Victoria Revell, a senior project manager at the Surrey Clinical Research Centre at the University of Surrey in the U.K. “Light has an acute alerting effect when it is transmitted from our eyes directly to our brains,” says Dr.
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