Your circadian rhythm can be thrown out of whack by a lack of light. That's your body's 24-hour sleep-wake cycle. How can a lack of light cause such severe symptoms? Sun exposure stimulates a part of the brain that helps control your circadian rhythm. While researchers don't know the exact causes of SAD, they do agree that a lack of light is a main contributor. People who experience these symptoms annually for at least two years can be formally diagnosed with SAD. Thoughts of death or suicide, or attempted suicide.Trouble concentrating or making decisions.Increased restlessness, or slowed movements and speech.Change in sleep (usually sleeping too much).Changes in appetite, such as eating more or craving carbohydrates.Loss of interest in activities you used to enjoy.Feelings of sadness or a depressed mood.The symptoms associated with SAD can range from mild to severe and can include: And also like major depression, SAD can be treated. SAD stands for seasonal affective disorder, a form of temporary depression that tends to occur in the fall and winter when the days are shorter and there's less light.īut SAD is more than just the “winter blues.” Like major depression, SAD can cause serious symptoms.
It's a highly appropriate acronym for the condition it describes. Feeling SAD? Try light therapy Mind, Show on Corporate Home