Biological models of addiction focus on the importance of genetics and the biological forces of nature. These theories suggest that brain chemistry, brain structure, and genetic abnormalities can influence human behavior. Although many of these models have not been tested or applied to each type of addiction, research has revealed that certain biological risk factors can increase the likelihood of addictive outcomes. Multiple biological models have been proposed to understand addictions and vulnerability to addiction, and many of these models are complementary and not mutually exclusive.
As biological studies identify specific brain pathways and chemicals that may underlie specific aspects of addictions and vulnerability to addictions, the knowledge gained has significant potential to advance prevention, treatment and policy interventions. Efforts to combat addictions need to consider how a better biological understanding of addictions can lead to better prevention, treatment and policy initiatives. Further consideration and clarification of the biological etiologies of addictions has significant potential to make significant progress and reduce the public health impact of addictions. It is clear that biology plays an important role in addiction, but it is not the only factor.
Other factors such as environmental influences, psychological issues, and social dynamics can also contribute to addiction. Therefore, it is important to consider all aspects when attempting to address addiction.""