Strongfit Podcast - episode 210: Meta-analysis Low Serotonin is not linked to Depression
A systematic umbrella review of the evidence shows low serotonin levels is not associated with depression.
"This review suggests that the huge research effort based on the serotonin hypothesis has not produced convincing evidence of a biochemical basis to depression. This is consistent with research on many other biological markers. We suggest it is time to acknowledge that the serotonin theory of depression is not empirically substantiated."