Neurobiologists and evolutionary biologist. A depressive disorder is an illness that influences the body, thoughts and mood. It affects how people eat, sleep, feel about themselves and how they think about things. The symptoms of depression vary from case to case. Symptoms include feelings of hopelessness, pessimism, guilt, decreased energy, fatigue, loss of appetite or over eating, thoughts of death or suicide ,etc. Those who are depressed lose interest in hobbies and activities that were once…
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