Research: Adjusting the LED light band can adjust the body clock

Like the ear has two uses, the human eye has two functions, it accepts both visual input signals and the retina also covers the visual network to detect sunrise and sunset. Using light, the body sets a 24-hour cycle of the internal clock, which works by the photochromic hormone produced by the human body at night, which promotes sleep and detects a range of physiological processes.

In modern society, even after dusk, people's eyes are still full of various light, and the light entering the retina will inhibit the production of melatonin. This break of physiological cycle may not only change sleep, but also cause various diseases.

Early studies have shown that most light inhibits melatonin, and blue light has a special effect on stimulating melatonin release. However, the results of recent Swiss scientists have overturned the above conclusions. Compared with ordinary fluorescent displays, the concentration of melatonin in the human body is significantly lower when exposed to high-intensity LED displays . And because blue light inhibits melatonin, blue light can keep people in a more awake state, and even if the light is turned off, this state will not be removed immediately.

The incandescent lamps used in the early days contained more red light, and now the emerging fluorescent lamps contain more blue light. Therefore, some experts believe that the changes in the light environment not only have a wide impact on people's sleep but also on human health, for example, they will increase. Weight and so on. Now, researchers are trying to adjust the body's biological clock by adjusting the band of light to meet the needs of special working conditions.