givinghealthylife onfuse your brain and keep you awake longer.
Blame the blue
There are several wavelengths of light emitted by electronic devices and energy saving light bulbs. However, the blue light seems to be the most notorious. Interestingly, compact fluorescent lamps contain approximately 25% harmful blue light and LEDs contain approximately 35% harmful blue light.
In an experiment carried out at Harvard University, it was discovered that exposure to blue light for 6.5 hours suppressed the release of melatonin for twice the same time as green light. He also changed the circadian rhythm in 3 hours. In another experiment conducted in Toronto, people who were exposed to bright light but wearing blue blocking glasses had the same melatonin levels compared to those who were in a dimly lit room.
Another study that analyzed adolescents using their mobile phones or gadgets during the night found that only one hour of exposure to blue light reduced melatonin levels by 23%. In two hours, it was further reduced to 38%.
Similarly, red light seems to have almost no effect on the circadian rhythm compared to blue light. Some people even advise using a dark red light as bed light since it would not interrupt sleep patterns.
The ill effects of blue light
So what effect does blue light really have on the body? Unfortunately, it is not just that it affects sleep. Excessive exposure to blue light has now been linked to weight gain, heart disease, depression and even some http://givinghealthylife.com/