Did you know…
The chemical imbalance you were told caused your depression was a hoax. The chemical imbalances that actually correlate with mood disorders are measurable in an ordinary blood draw, correctable with cheap intervention, and never named at the consultation. The first proposition rests on a systematic umbrella review published in Molecular Psychiatry in 2022. The second rests on two decades of nutritional psychiatry the standard prescription pad ignores.
The claim, in the words of the umbrella review that ended the paradigm
Joanna Moncrieff, Ruth E. Cooper, Tom Stockmann, Simone Amendola, Michael P. Hengartner, and Mark A. Horowitz published in Molecular Psychiatry in July 2022 the systematic umbrella review that closed the file on the serotonin theory of depression. Their conclusion is direct:
“The major strands of research on serotonin shows there is no convincing evidence that depression is associated with, or caused by, lower serotonin concentrations or activity.”
— Moncrieff, Cooper, Stockmann, Amendola, Hengartner & Horowitz, Molecular Psychiatry, 2022
And more comprehensively:
“No consistent international evidence of an association between serotonin and depression, and consequently no convincing evidence of a biochemical basis of depression.”
— Moncrieff et al., 2022
The review examined every major line of serotonin research (receptor binding studies, receptor gene studies, tryptophan depletion studies, animal studies, and cerebrospinal fluid serotonin metabolite studies) and found none of them supported the causal claim that had, for four decades, justified prescribing tens of millions of doses per day of medications named for the neurotransmitter.
The imbalances that are measurable, and are measurably low
Patients with depression, anxiety, and bipolar disorder show a high prevalence of specific nutritional deficits that are directly relevant to mood regulation and are measurable in an ordinary blood draw:
- Omega-3 fatty acids: EPA-dominant supplementation produces the strongest and most consistent effect on unipolar and bipolar depression across randomized trials.
- Folate (0.8 mg/day) and vitamin B12 (0.4 mg/day): reduce depressive symptoms via effects on one-carbon metabolism, monoamine turnover, and GABA synthesis.
- Magnesium: in one case series, 125 to 300 mg per meal produced rapid recovery from major depression in under seven days in most patients. A 1990 study of rapid-cycling bipolar patients found magnesium as effective as lithium in approximately half the subjects.
- Vitamin D: chronically deficient in the majority of psychiatric inpatients, with documented effect on mood.
What the psychiatric visit currently produces
A depressed patient in a standard consultation in 2026 receives a diagnostic label, a screening rating scale, and a prescription for a drug named after the neurotransmitter whose alleged imbalance was retired by peer-reviewed umbrella review three years earlier. They do not receive an omega-3 index, a red-cell folate, a holotranscobalamin, a red-cell magnesium, or a serum vitamin D. The chemical imbalances that would be actionable are not measured. The chemical imbalance the prescription addresses was not there to begin with.
This entry is a companion to fiches on Omega-3, Folate, Magnesium, and to The Hunger We Don’t See.