Light Pollution & Your Brain: How Evening Screens and Indoor Light Disrupt Mood
Brain Power Hub · Sleep & Mood You finish work, collapse onto the couch, open your phone or laptop “just for a bit” – and suddenly it is midnight. Your room is dim but your screens are bright, the street outside never really gets dark, and when you finally turn everything off, your mind is still buzzing. You sleep, but wake up feeling strangely heavy, flat, or irritable. This is what light pollution looks like from the inside. Light is not just something you see – it is a biological signal that tells your brain when to be alert, when to recover, and how to balance mood. Evening screens and indoor light can quietly push those signals in the wrong direction. Quick navigation What “light pollution” means for your brain How evening light talks to your body clock Light, sleep, and mood: what science shows Screens at night: lab studies vs. real life How ...