The Effects of Antidepressants on the Brain

If there's nothing wrong with the brain, then what are antidepressants doing to the brain? There was a very concerted campaign starting in the 1990s to change people's common sense views about the nature of depression. And this was led by the pharmaceutical industry where the medical profession jumped on board. It basically set out to convince people that depression is a biological brain condition and needs to be treated with drugs.