Ensayo

Among peer-support groups for alcoholics, Alcoholics anonymous (AA) is by far the most widespread and successful with tens of thousands of groups all around the world. However, the mechanism of action of AA’s success is not immediately clear. Advances in understanding the neuroscience of addiction have allowed the identification of two brain areas that, among others, explain the irrational and self-destructive behavior of alcoholics. First, alcohol hijacks the reward systems of the midbrain in charge of detecting and experiencing pleasure (through the release of dopamine in the nucleus accumbens and the ventral tegmental area) with a pleasurable stimulation that far exceeds the normal pleasures of life (such as eating and sexual reproduction). These pleasurable experiences are essential for the survival and evolution of the species. Nature has cleverly linked pleasure with survival, an...