Researchers studying a disease that causes people to suddenly drop off to sleep are trying to turn what they have learned into a new way to help insomniacs get some shut-eye.
Orexin, also known as hypocretin, is important in maintaining wakefulness. It is absent in the brains of people who suffer from narcolepsy, a chronic disorder in which people cannot regulate sleep-wake cycles normally. It is estimated to affect more than 135,000 people in the United States, according to the National Institutes of Health.(Read entire article)