A writer for The New York Times asks: Ten years after diagnosis, could I finally dispense with chemical sleeping aids? A succession of infections, surgeries to cope with them, and umpteen rounds of antibiotics and chemotherapy,...

Roughly half of patients with cancer have symptoms of insomnia, and many may have sleep problems that linger for at least a year, a small study suggests. Up to 10 percent of adults in the developed world suffer from chronic...