Biology
Neurotransmitter Pathways in Major Depressive Disorder
Quick fact
Although the 'chemical imbalance' theory says low serotonin causes depression, reducing serotonin in healthy people does not reliably cause depression—highlighting that neurotransmitter pathways act as modulators, not simple switches.
Why this is interesting
Ever wonder why antidepressants take weeks to work when they change brain chemistry in hours? The answer lies not in a simple chemical imbalance, but in the dynamic dance of your brain's neurotransmitter pathways.