Copper for Nerve Function

Research suggests that copper plays a meaningful role in nerve function, primarily through its involvement in antioxidant defense via the copper/zinc superoxide dismutase (SOD1) enzyme and its broader role as an essential micronutrient supporting neurological integrity. A 2018 review notes that copper deficiency can produce neurological damage that is only partially reversible with supplementation, distinguishing it from the fully reversible blood-related effects, while a 2013 study using SOD1-deficient mice found that loss of this copper-dependent enzyme accelerates peripheral nerve degeneration through oxidative stress, myelin loss, and axonal damage. A 2002 study further raised the possibility that excess reactive copper bound to glycated proteins may contribute to nerve and vascular complications in diabetes, suggesting copper dysregulation in either direction carries neurological risk. The available evidence consists primarily of animal studies, cell-based models, and reviews rather than human clinical trials, which limits the strength of conclusions that can be drawn about copper's direct therapeutic role in human nerve function.