S.A.D. and Circadian Rhythms

“If we had no winter, the spring would not be so pleasant: if we did not sometimes taste of adversity, prosperity would not be so welcome.”   - Anne Bradstreet, British poet   It’s that time of the year again.  Especially for those of us not fortunate enough to live in warmer climes- the winter is coming.  As we all know, along with the season comes shorter days and longer nights.  Some of us may... Read more ...

A thesis from the Sahlgrenska Academy, University of Gothenburg, Sweden, concludes that people who have nightmares following a suicide attempt are five times more likely to attempt suicide again, compared with those who do not have nightmares. The study included 165 patients aged 18-69 years, who were being treated at somatic and psychiatric departments following a suicide attempt in Sweden. Read more ...

A study in the Feb. 1 issue of the journal SLEEP was the first to use twin data to examine the longitudinal link between sleep problems and depression. Results of this study demonstrate that sleep problems predict later depression; the converse association was not found. These findings are consistent with the theory that early treatment of sleep problems may protect children from the development of depression. Read more ...

In this blog, I am going to deal with a question that has stumped some of the most talented researchers in the world.  That should hopefully get your attention- this vexing question seems simple, but represents the “holy grail” of biology.  The question: why do we sleep?  Consider this- we spend approximately one-third of lives doing it and scientists are still not quit sure why.  (Much of this and future blogs on... Read more ...

In my last blog we discussed at length the different stages of sleep, namely non-REM and REM, the biological need for sleep to stay alive, and started discussing what some researchers believe may be the function of some portions of non-REM sleep.  We reviewed how there is some evidence linking declarative memory (memory of facts and figures) to slow wave sleep and procedural memory (the ability to perform tasks like riding a bike or playing... Read more ...