Dear Doctors: I need it to be completely dark to sleep well. I've got blackout curtains, I use an analog clock and I even duct-taped the digital lights on the smoke alarm. I just read that light at night is bad for your health. Is that true? I want my husband to know I'm not overreacting about this.
Dear Reader: Most of us live in a world saturated with artificial light. Even those in more rural ar…