[caption id="attachment_258" align="alignright" width="322"] Depressed mind looks different[/caption] Depression is defined as phenomenon in which we feel sad ,gloomy,down for the long period of time.Depression is common but serious illness.Depression is the illness of brain.In depression the important neurotransmitters are out of balance.They have decrease amount of plasma tryptophan, seratogenic function abnormalities and lower level of brain serotonin.The brain of depress people looks different from those of without depression .The parts of brain including sleep ,appetite,mood,thinking and behaviour appear different. Symptoms of Depression The following are the symptoms of depression : Persistent sad ,anxious and gloomy feelings [caption id="attachment_261" align="alignright" width="315"] Depression changes eating habits[/caption] Feeling guilty, hopeless and helpless Fatigue and loss of energy Insomnia or hypersomnia