Although drug addiction and substance abuse are very closely intertwined with mental health, addiction is traditionally not considered to be a mental health disorder. Addiction is both a physiological and a biological condition, with the divide between a mental disorder and a drug addiction remaining a very fine line. According to recent research, however, this fine line may be getting even finer: injury to certain areas of the brain may make people more susceptible to addiction, as well as less likely to discern one substance from another. These findings highlight the psychological aspects of a physical addiction, making this an interesting point to consider – should addiction be listed as a mental health disorder specifically? It may take a bit of continued research and further studies to better understand this fine line.