Scientists from the University of Copenhagan in Denmark may have identified an underlying biological cause of seasonal affective disorder (SAD), and helped explain why the “winter blues” can be so severe for some people. Brain scans have revealed that people who develop SAD have less access to serotonin, the brain signalling compound associated with feelings of wellbeing and happiness, as the days get shorter in the winter months.
Posted on: Thu, 30 Oct 2014 08:25:23 +0000