LiveScience: For months after Hurricane Sandy sent nearly six feet of water surging into her home in Long Beach, N.Y. an oceanfront city along Long Island' s south shore retired art teacher Marcia Bard Isman woke up many mornings feeling anxious and nauseated. She had headaches, and inexplicable bouts of sadness. She found herself crying for no apparent reason. "I would feel really sad, and that's just not me," she said. "I felt like the joy was out of my life. I still haven't recaptured it." What Isman...