For most of human history, night has been dark. Very, very dark—no hall light on, no streetlights streaming through the windows, no TV casting ambient light in the next room. Now, however, it’s rare to find yourself in total darkness.
Recent research has found that might be a problem. Light exposure at night has been linked to higher rates of diabetes, obesity, and hypertension. Last year, researchers connected it to higher rates of heart failure and other cardiovascular problems over 10 years.
Publishing in the European Heart Journal on September 9, another research team now reports that compared to people sleeping in darkness, people exposed…
Read the full article at TIME.COM
