Nighttime light exposure may change heart structure and function, study finds

It’s easy to overlook the soft glow in your bedroom at night, whether it’s from streetlights sneaking past the curtains, a forgotten TV screen humming quietly in the corner, or that persistent blue light blinking from your phone charger. It all seems pretty harmless, right? But researchers are starting to see a different story. New findings are pointing to something bigger than just a restless night: the light filling your room could be quietly reshaping your heart.A team published their work in the European Heart Journal after studying over 11,000 people. They discovered that folks exposed to more light at night had clear, measurable shifts in their heart’s structure just three years down the line. That wasn’t all. Greater exposure to artificial light after dark went hand in hand with a raised risk of heart failure, atrial fibrillation, heart attacks, strokes, and even cardiovascular death.