By reducing human suffering to a brain chemical deficit, modern medicine has ignored the real roots of our distress: trauma, isolation, and economic strain.
If you walked into a GP surgery anywhere in the West thirty years ago feeling crushed by exhaustion, fear, or sadness, you were likely handed a straightforward explanation. Your brain, you were told, was suffering from a chemical deficit—specifically a lack of serotonin. The fix was equally neat: a daily pill to restore balance, much like insulin for a diabetic.
It was an attractive story. It was also wrong.
Three decades into this grand medical experiment, the numbers are unsparing. Across developed nations, antidepressant consumption has jumped by nearly 250% in a single generation. Therapy options have multiplied into hundreds of competing methods. Yet rates of psychological distress keep climbing. Primary care clinics are overwhelmed, and younger patients are turning up in record numbers.
If depression were simply a physical defect waiting for a pharmaceutical patch, this surge in treatment should have made us healthier. Instead, we are sicker than ever.
A convenient myth
The idea that depression stems from a shortage of serotonin in the brain was never an established medical fact. Extensive reviews of clinical data have repeatedly shown no reliable link between serotonin levels and mental health.
When selective serotonin reuptake inhibitors (SSRIs) work, they do not cure an underlying pathology. In trial after trial, antidepressants struggle to outperform placebos. Where they do offer relief, it often comes down to general emotional blunting, mild anti-inflammatory effects, or the expectation of care.
Nor can we blame our genes. Despite billions spent searching for genetic markers of mental illness, findings remain thin. In practice, a patient's postcode—their housing, income, debt, and security—is a far better predictor of emotional collapse than their DNA.
The chemical imbalance model did not survive on medical merit. It survived because it served a purpose. For pharmaceutical firms, it created a perpetual market. For a busy healthcare system, a four-minute consultation culminating in a prescription was cheap and manageable. And for society at large, it offered a comforting distraction: if suffering is just faulty brain wiring, nobody has to look at the world surrounding the patient.
Changing the question
In busy clinics, doctors are trained to ask a standard diagnostic question: What is wrong with you?
That single phrase quietly shifts the blame onto the individual. It turns a human reaction to pain into an internal fault.
A far more revealing question is: What happened to you?
The human nervous system does not form in a vacuum. During the first three years of life, a child's brain wires itself through relationships with primary caregivers. When those early years are marked by neglect, fear, or instability, the body adapts to survive.
Decades later, those early survival patterns do not simply vanish. They reappear as chronic anxiety, deep depressive shutdowns, or persistent physical pain. Conditions long treated as separate medical issues—from severe depression to fibromyalgia and autoimmune flare-ups—frequently share the exact same origin: years of unaddressed nervous system strain rooted in early adversity.
Calling this a disease misses the point. Depression is rarely a random breakdown; it is an adaptive response to a life story.