A new review has comprehensively debunked the serotonin theory of depression.
Whilst I was in the midst of writing last week’s post, The ADHD scam, a systematic umbrella review was published in the journal Molecular Psychiatry, on the so-called serotonin theory of depression. This theory posits that low levels of, and/or low activity of, the neurotransmitter (brain communication chemical) serotonin is causally associated with depression. The review concluded that
“The main areas of serotonin research provide no consistent evidence of there being an association between serotonin and depression, and no support for the hypothesis that depression is caused by lowered serotonin activity or concentrations.”