Evaluation of antidepressant activity of Spirulina platensis

Depression is the most common of the affective disorders (disorders of mood rather than disturbances of thought or cognition); it may range from a very mild condition bordering on normality to severe (psychotic) depression accompanied by hallucinations and delusions. Worldwide depression is a major cause of disability and premature death. There are two distinct types of depressive syndrome namely unipolar depression in which the mood swings are always in the same direction and bipolar affective disorder in which depression alternates with mania.