Naltrexone addiction medicine is used to treat alcohol addiction and has been found to suppress abnormal sexual behavior due to its effect on dopamine. Deep within the brain is a structure called the nucleus accumbens that is responsible for allowing emotions to influence action and flooding the brain with happy chemicals (Floresco, 2015). It is not surprising, therefore, that when the biochemical process in this part of the brain breaks down, people lose control over what makes them happy and also find it difficult to control themselves. Porn addiction is defined as emotional dependence on pornography to the point that it interferes with relationships, daily activities, and ability to function.