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Using Light (Sunlight, Blue Light & Red Light) to Optimize Health
Huberman Lab
Melanopsin cells and pain perception
Neurons in our eyes communicate with specific brain areas, helping to relieve pain. These neurons, called melanopsin cells, convert light into electrical signals. The signals are then transmitted to the brain, activating the release of endogenous opioids that reduce pain perception. A recent study found that not only skin exposure to light but also light entering the eyes, specifically UVB light from sunlight, triggers these pain-relieving pathways. This discovery explains why we often feel less pain in longer or brighter days.
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