September 19, 2006 -- Sleep disorders are quite common. About 50% of the population suffers from significant insomnia at some time, and 10% of the population has chronic insomnia. While sleep is necessary for survival, its precise mechanism of action is not well understood. We look at what science has discovered about sleep so far. In the second part of the series, we will discuss the drugs seeking part of the $3.7 billion market for sleep medications...
