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Depression is a clinically significant mood disorder characterized by a persistent feeling of sadness, a loss of interest or pleasure in most activities (anhedonia), and diminished energy. Diagnostic criteria typically include additional symptoms, such as changes in sleep, appetite, and psychomotor activity, as well as cognitive impairments, such as diminished concentration or recurrent thoughts of death, which significantly disrupt daily functioning and quality of life.
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The Center for Nutritional Psychology
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The Center for Nutritional Psychology. (2024). Depression. In Encyclopedia of Nutritional Psychology. The Center for Nutritional Psychology.
https://www.nutritional-psychology.org/encyclopedia/depression/
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