During certain seasons of the year, you may notice changes in your energy level, sleep and interest in activities.
Seasonal affective disorder, or SAD, is a type of depression that is related to the changes in seasons.
Symptoms typically appear in the autumn, continue through the winter months and eventually go away in the spring or summer.
Affective disorders are mood disorders that significantly affect feelings and responses to emotions.
What are the possible causes of SAD?
While the exact cause is unknown, it may be linked to the reduced amount of sunlight affecting the natural chemicals like serotonin and melatonin in your body that determine mood and energy levels and regulate sleep.
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