What are the major causes of depression?

Depression is a common and serious medical illness that negatively affects how you feel The way you think and how you act. Depression causes feelings of sadness and/or a loss ofinterest in activities you once enjoyed.  It can lead to a variety of emotional and physical problems and can decrease your ability to function at work and at home. Depression symptoms can vary from mild to severe and can include: Feeling sad or having a depressed mood Loss of interest or pleasure in activities once enjoyed Changes in appetite — weight…