Depression is a common and serious medical illness that negative effect how you feel they, the way you think and how you acct. Fortunately it is also treatable. Depression cause feelings of sadness or loss of interest in activities once enjoyed. It can lead to variety of emotional and physical problems and can decrease is a person ability to function at work and at home. Depression symptoms can vary from mild to swear and can include feeling sad or having a depressed mood loss of interest or pleasure in activities once enjoyed changes in appetite weight loss or gain on related or dieting trouble sleeping sleeping too much loss of energy and or increase fatigue increase in purposeless physical activities easy hand where you are facing are slow movement and speech action observed by others feeling worthless or guilty difficulty thinking concentrating are making decisions thoughts of death or suicide ...