Depression is a kind of a mental health disorder characterized by persistently depressed mood or loss of interest in activities.
Possible causes include a combination of biological, psychological and social sources of distress. Increasingly, research suggests that these factors may cause changes in brain function, including altered activity of certain neural circuits in the brain

What is Depression?
According to American Psychiatric Association, Depression (major depressive disorder) is a common and serious medical illness that negatively affects how you feel, the way you think and how you act. Fortunately, it is also treatable. Depression causes feelings of sadness and/or a loss of interest 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 loss or gain unrelated to dieting

• Trouble sleeping or sleeping too much

• Loss of energy or increased fatigue

• Increase in purposeless physical activity (e.g., inability to sit still, pacing, handwringing) or slowed movements or speech (these actions must be severe enough to be observable by others)

• Feeling worthless or guilty

• Difficulty thinking, concentrating or making decisions

• Thoughts of death or suicide

How to overcome from depression?

• Find small ways to be of service to others.

• Find workable goals that give you a sense of accomplishment.

• Pleasant Events: Schedule pleasant activities or events.

• Engagement: Stay in the present.

• Exercise: And, eat right too.

• Relationships: Focus on people who lift you up.

• Sleep Regularly: Try to keep a regular sleep schedule.