For many people, gazing out of a window is a pleasant thing. The birds, trees, and sky can all bring a smile. But for Melissa Lewis, 47, of Prescott, AZ, it had a different effect.
“When I lived in Minnesota, I remember looking outside and saying to myself, ‘Oh no. No sun today? No sun tomorrow?’ ” Each year, around the beginning of fall and through early March, she dealt with severe fatigue. All she wanted to do was sleep until spring rolled around. “I felt trapped,” she says.
Lewis was later diagnosed with seasonal affective disorder (SAD), a type of depression that affects 10 million people in…