NEW YORK (Reuters Health) - Severe breathing disorders during sleep, such as sleep apnea, can kill, a study in more than 6,000 people shows.Men 40 to 70 years old with severe sleep-disordered breathing were twice as likely to die over an eight-year period as their peers without the condition, Dr. Naresh Punjabi of Johns Hopkins University in Baltimore and his colleagues found.Sleep-disordered brea