Depression: it’s a word we use a lot, but what exactly is it?

Depression is a serious disorder marked by disturbances in mood, cognition, physiology and social functioning. People can experience deep sadness and feelings of hopelessness, sorrow, emptiness and despair. These core features of depression have expanded to include an inability to experience pleasure, sluggish movements, changes in sleep and eating behaviour, difficulty concentrating and suicidal thoughts. [...]