Long exposure to blue light emanating fromof our phones, computers, and many other household appliances, can negatively affect a person’s life expectancy. Scientists suggest that the blue waves that emit LEDs damage the cells of the brain and retina, even if there is no direct incidence of light rays. Scientists conducted a series of studies on an ordinary fruit fly, as a result of which it turned out that the light waves released during the burning of LEDs accelerate the aging process.
Is blue light harmful?
Light is electromagnetic radiation, eachwhose color has its specific amount of energy. At the beginning of the light spectrum there is red, which has low energy and is easily perceived by the human eye, closer to the top of the spectrum is blue light, which has the highest energy and is able to penetrate the retina, quickly wearying our organs of vision.
Artificial blue light that comes frommodern gadgets and devices, occupies the most “harmful” part of the spectrum, the wavelength of which is between 380 and 500 nm. Light waves of this range are the shortest of visible radiation, while scattering most actively.
Scientists have long confirmed the negative impactblue light on humans, but they continue to conduct more detailed studies about its effect on the human body so far and do not plan to stop on the information received. So, scientists from a university in Oregon published the results of new research in the journal Aging and Mechanisms of Disease.
During the experiment, researchersused an ordinary fruit fly - Drosophila melanogaster, whose organism, due to its cellular developmental mechanisms, is similar to other animals and people.
During the study, researchersused 3 groups of flies. The first group underwent daily 12-hour cycles: 12 hours in the light and 12 hours in the dark. The second group was always in the dark and was used as a control, and the third group was subjected to filtered blue light. According to the results of the study, it was found that the flies from the first group had a shorter life span. A study of flies that were exposed to 12 hours of blue light confirmed damage to retinal cells and even brain neurons, reducing the ability of flies to climb fences.
In the experiment, fruit mutants were also used.flies, some of which did not have visual organs, but even eyeless flies showed brain damage and impaired coordination. Thus, flies did not have to see the light in order for it to cause disturbances in the body. Researchers also noted an interesting fact that flies try to avoid blue light if given a choice.
See also: Blue light invigorates better than coffee
Scientists note that the presence of natural lightis crucial for the circadian rhythm of the body - a cycle in which a number of physiological processes occur, such as brain activity, hormone secretion, cell regeneration, etc. However, the increased exposure to artificial light, which is increasing in the modern world, is one of the risk factors for sleep failure and many other circadian disorders.
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Using LED lighting, variousgadgets and devices exposes people to more and more light in the blue spectrum. But due to the fact that these technologies are quite new, it is not possible to find out about their impact on a person throughout his life.