Patric på Dolor pratar utmattning, depression och smärta

Varför får man depression? Det här verkar vara en svårare fråga än varför vi besväras av utmattningssyndrom eller långvarig smärta.

Lyssna för att få ett litet hum om min syn på varför vi skulle kunna lida av depressioner.

Jag hänvisar här till två andra texter än mina egna. Kirsch "Antidepressants and the Placebo Effect" i Zeitschrift fur Psychologie. 2014; 222(3): 128-134:

“Antidepressants are supposed to work by fixing a chemical imbalance, specifically, a lack of serotonin in the brain. Indeed, their supposed effectiveness is the primary evidence for the chemical imbalance theory. But analyses of the published data and the unpublished data that were hidden by drug companies reveals that most (if not all) of the benefits are due to the placebo effect. Some antidepressants increase serotonin levels, some decrease it, and some have no effect at all on serotonin. Nevertheless, they all show the same therapeutic benefit. Even the small statistical difference between antidepressants and placebos may be an enhanced placebo effect, due to the fact that most patients and doctors in clinical trials successfully break blind. The serotonin theory is as close as any theory in the history of science to having been proved wrong. Instead of curing depression, popular antidepressants may induce a biological vulnerability making people more likely to become depressed in the future.”

"What has serotonin to do with depression?" av Philip J Cowen och Michael Browning säger så här:

"“The “serotonin hypothesis” of clinical depression is almost 50 years old. At its simplest, the hypothesis proposes that diminished activity of serotonin pathways plays a causal role in the pathophysiology of depression. This notion was based on the depressogenic effects of amine depleting agents such as reserpine, as well as the actions of antidepressant drugs such as monoamine oxidase inhibitors and tricyclic antidepressants, discovered by clinical serendipity, but later found in animal experimental studies to potentiate the effects of serotonin and other monoamines at the synapse (1).

This pattern of theory making – moving from the pharmacological actions of drugs with some efficacy in treatment to biochemical notions of causation – has been common in biological psychiatry. In such an undeveloped field this approach, though logically precarious, has been a useful heuristic and, in the case of the dopamine hypothesis of psychosis, has been strikingly upheld by advanced brain imaging techniques (2). However, the serotonin hypothesis of depression has not been clearly substantiated. Indeed, dogged by unreliable clinical biochemical findings and the difficulty of relating changes in serotonin activity to mood state, the serotonin hypothesis eventually achieved “conspiracy theory” status, whose avowed purpose was to enable industry to market selective serotonin reuptake inhibitors (SSRIs) to a gullible public (3).”"