Thomistic Hylomorphism, Self-Determination, Neuroplasticity, and Grace

This paper presents a Thomistic analysis of addiction that incorporates scientific, philosophical, and theological features of addiction. I will argue first, that a Thomistic hylomorphic anthropology provides a cogent explanation of the causal interactions between human action and neuroplasticity. I will employ Karol Wojtyła’s account of self-determination to further clarify the kind of neuroplasticity involved in addiction. Next, I will elucidate how a Thomistic anthropology can accommodate, without reductionism, both the neurophysiological and psychological elements of addiction, and finally, I will make clear how Thomism can provide an ethics and a theology of grace that can be integrated with these ontological and scientific considerations into a holistic theory of addiction.