People with brain injuries may produce low amounts of melatonin, which affects their sleep, according to a study published in the May 25, 2010, print issue of Neurology the medical journal of the American Academy of Neurology. For the study, 23 people who had a severe traumatic brain injury an average of 14 months earlier and 23 healthy people of the same age spent two nights in a sleep laboratory. “We’ve known that people often have problems with sleep after a brain injury, but we haven’t known much about the exact causes of these problems,” said study author Shantha...






