Do you wake up at 4am?

I used to wake up often between 3:30 and 4:00 in the morning. It was so irritating not to be able to fall back to sleep –or even worse, to fall back to sleep just a half hour before I needed to wake up. …

Which genes cause insomnia?

Everyone at some point knows the pain of a sleepless night. For some, though, this is an all too frequent occurrence. A few quick facts: 10% of adults (and 22% of the elderly) have insomnia disorder[ref] Heritability estimates from twin studies show that insomnia…