According to the Mayo Clinic, seasonal affective disorder (duly nick-named SAD) is “a type of depression that's related to changes in seasons.” For the majority of those affected by seasonal changes, fall and winter are when symptoms emerge. The causes of SAD are thought to be attributed to fewer hours of daylight and reduced level of sunlight, reduced serotonin (also caused by less sunlight), and or a disruption in melatonin levels.
Some symptoms of the disorder include feeling depressed most days, losing interest in activities you once enjoyed, low energy, difficulty sleeping, and changes in your appetite or weight, among others. If you think you’re suffering from SAD, go see your doctor – and don’t despair, because SAD treatment is out there!