KANSAS CITY, Mo. -- Depression sucked the life from Lori Jackson’s time on this earth for nearly 40 years. On her darkest days in college she hung a blanket over her dorm room window to block out the light and slept, skipping classes. As she had her three children, her doctor prescribed Prozac for postpartum depression, but that didn’t lift the darkness. “It’s hard to describe, and it’s kinda cliche maybe. … You just feel like somebody has put a black, non-see-through blanket over your head,” said Jackson, who is 55 and lives in Overland Park, Kansas. “It’s heavy and it’s black and it’s just a...