Adjusting the LED light band can regulate the human body clock

Like ear has two purposes, the two functions of the human eye, it can accept the visual input signal, the retina visual network coverage, to detect the sunrise and sunset. Using light, the body set up a 24 hour cycle of the body clock, which is the principle of human body by the night of the production of melatonin, the hormone can promote sleep and detection of a series of physiological processes.

In modern society, even after dusk, people's eyes are still full of light, the light will enter retinal melatonin, break the physiological cycle may not only change the sleep, and may cause a variety of diseases.

Early results suggest that most light inhibits melatonin, which has a special effect on the release of melatonin. However, the results of recent Swiss scientists to overthrow the above conclusions, compared to the ordinary fluorescent display, high intensity of blue light LED display, the human body melatonin concentrations significantly lower. And because of the blue light suppression of melatonin, blue light irradiation will keep people awake, even if the lights off, this state will not be immediately removed.

The early use of incandescent lamps containing more red, and now the new fluorescent lamp contains more blue, so some experts believe that the changes in light environment, not only for people's sleep, also has an extensive impact on human health, such as increased body weight. Now, researchers are trying to adjust the human body clock by adjusting the wavelength of light, so as to meet the needs of special working conditions.