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Scientists have discovered how green light reduces pain

Scientists have found that green light can reduce pain. For this, Fudan University specialists studied the nerve activity of mice from the eyes to the brain. The scientists' article was published in Science Translational Medicine.
Scientists have previously found that green light reduces pain levels in people with conditions such as arthritis, migraines and fibromyalgia, but the reasons for this have remained a mystery. To answer this question, scientists conducted a series of experiments on mice.
The scientists studied all the parts of the visual system of mice that are involved in receiving and processing light. By turning each of them off at different times, they tested how it affected the sensation of pain. The response showed that this light promotes greater transmission of gamma-aminobutyric acid, which slows the activity of neurons, including those associated with feelings of fear and anxiety. This led to greater expression of the Penk gene, which stimulates the processes that lead to the dulling of pain.
Next, the researchers plan to study why the brain has evolved in such a way that green light reduces the sensation of pain.

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