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Updated: Feb 1, 2026

Perspectives on Neuroscience
Published on: July 31, 2007
Drug Addiction: From Neuroscience to Ethics
Michele Farisco1,2, Kathinka Evers1, Jean-Pierre Changeux3
1Centre for Research Ethics and Bioethics, Uppsala University, Uppsala, Sweden.
Abstract:
In the present paper, we suggest a potential new ethical analysis of addiction focusing on the relationship between aware and unaware processing in the brain. We take the case of the opioids epidemics to argue that a consideration of both aware and unaware processing provides a more comprehensive ethical framework to discuss the ethical issues raised by addiction. Finally, our hypothesis is that in addition to identified Central Nervous System's neuronal/neurochemical factors contributing to addictive dynamics, the socio-economic status plays a causal role through epigenetic processes, originating the need for additional reward in the brain. This provides a strong base for a socio-political form of responsibility for preventing and managing addiction crisis.
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