Not entirely. Some individuals experience relief as a result of the placebo-effect. I bet if you gave a depressed folk a sugar pill and claimed it was the most the potent AD they'd trick themselves into feeling better. I'm not a stubborn guy and I'm willing to admit that was a bit of a HURRDURRR contradiction on my behalf but what evidence can you show that psychiatric disorders are a medical disease? There is also the other side of the spectrum where certain properties of a medication can exacerbate symptoms and turn one even more suicidal than they were. I understand medication can be effective and an antidepressant given to a depressed person will somehow increase and regulate activity serotonin levels in the synaptic cleft. But isn't this in the end just speculation rather than sheer fact? The propensity of pdocs orchestrating certain campaigns to diagnose certain disorders, sometimes in children (bipolar as an example) is a reason why'd they portray it as a disease, to sell drugs.