Exercise as Treatment

topic

Exercise is a comparably effective treatment for mild-to-moderate depression when implemented with the same specificity as pharmaceutical treatment — with the most effective protocols involving aerobic exercise at moderate intensity (150 minutes/week minimum) producing antidepressant effects through BDNF upregulation (neurogenesis in the hippocampus, which is reduced in depression), monoamine release (serotonin, dopamine, norepinephrine), HPA axis recalibration (cortisol normalization), neuroinflammation reduction, and the self-efficacy and behavioral activation benefits of exercise completion.

Role

Exercise as depression treatment represents one of the most evidence-based and least prescribing-resistant recommendations in mental health — with multiple RCTs and meta-analyses establishing its efficacy comparable to antidepressant medication for mild-to-moderate depression at 12-week follow-up — yet it is the treatment least systematically prescribed by clinicians, least systematically supported by healthcare systems, and least consistently implemented by the depressed people who would most benefit. The depression-specific implementation barrier is the very symptom being treated: the motivational deficit, anhedonia, and behavioral withdrawal of depression make exercise initiation maximally difficult precisely when its benefits would be most valuable, requiring the specific behavioral activation strategies that transform 'I should exercise' from an unimplemented intention into an actually occurring behavior.

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