What are some of the longterm effects of severe depression?

Depression effects: Symptoms of depression include:a loss of interest in activities you used to enjoy, difficulty concentrating, change in sleep and/or appetite, fatigue, feelings of hopelessness, sadness, poor motivation, and irritabiliy. Without treatment, these symptoms worsen which will adversely affect your ability to function, your physical health, relationship with others and could lead to suicidal ideation.

Depression effects: Depression is one of the most costly illnesses to society, in terms of people's ability to work and relate to each other. In depression, you may have very little motivation to study or work -- so poor productivity results. People can lose jobs. Apathy or irritability may pervade personal relationships, leading to suffering in families and kids who are unsupervised. Death by suicide can happen too.