Neurobiology, genetics, addiction, and consequences of drug use and relapse are all heavily researched topics that contribute to a better understanding of addiction and its effects on individuals and their families. Studies have also focused on factors such as smartphone and internet use, as well as the societal and moral implications of addiction. Research has shown a potential link between internet addiction and social functioning. However, there is still debate over the role of chemical hooks in addiction, with some proposing that they are a significant but not essential component.