A leading psychiatrist says that depression is not a human defect at all, but a defence mechanism that in its mild and moderate forms can force a healthy reassessment of personal circumstances.
Dr Paul Keedwell, an expert on mood disorders at the Institute of Psychiatry, argues all people are vulnerable to depression in the face of stress to varying degrees, and always have been.
The fact it has survived so long - and not been eradicated by evolution - indicates it has helped the human race become stronger.
"Psychological unease can generate creative work and the rebirth after depression brings a new love affair with life."
Aristotle believed depression to be of great value because of the insights it could bring. There is also an increased empathy in people who have or have had depression, he says, because they become more attuned to other people's suffering.
