A 24% response rate combining the two, and manual driven psychotherapy conferred no added benefit Bartova et al (2021). In the podcast from Mad In America these findings are set against a 31% placebo response rate. Further no evidence that the interventions altered the course of a disorder, which is the prime objective of treatments for physical disorders. Rather the focus was on symptomatic relief. Articles covered in podcast include:
- No Evidence Low Serotonin Causes Depression
- Response to Criticism of Our Serotonin Paper
- Less Than a Quarter of Those with Depression Respond to Treatment in Real Life
- Psychiatric Drugs Do Not Improve Disease or Reduce Mortality
- Screening for Depression in Adolescents Does Not Prevent Hospitalizations or Suicide Attempts
Pies and Dawson (2022) have today taken up the cudgel to attack the findings of Moncrieff et al (2002) that were the springboard for the podcast. But they are disingenuous in claiming that no one of academic credibility has ever suggested that low serotonin causes depression. For decades, at least in the UK this has been the dominant message given to patients, with the implication that they need antidepressants to restore the chemical imbalance. Pies and Dawson (2022) have recourse to a biopsychosocial model which posits interactions of thoughts, feelings, social factors and biology, in which will be found some biological factor that is of key importance in the development of depression and through which antidepressants will be found to work. But given the track record to date this seems unlikely and provides little basis for current pharmacological practice with the exception of the use of lithium.
In the Bartova et al (2021) study the therapists claimed that they were adhering to a manual driven psychotherapy protocol, but no fidelity checks were made. A similar scenario to the claim made by IAPT in the UK that it delivers CBT, but without any independent corroboration. It is I believe the case that CBT can make a real world difference for depression and the anxiety disorders if appropriately delivered.
Dr Mike Scott