Genetic Link Discovered Between Disordered Eating and Alcohol Use Disorders in Adolescent Twins
A recent comprehensive study conducted in the United States and Sweden has revealed a strong genetic connection between disordered eating and alcohol use disorders (AUDs) in adolescent twins. The study emphasizes the worsened outcomes, including fatality, when these conditions coexist in younger teens.
The study, which examined 3,568 female and 2,526 male same-sex twins in Sweden, highlighted the differing ways in which these intertwined disorders are influenced in males and females. It also stressed the significance of developing sex-specific treatment strategies.
One of the key findings of the study was the clear phenotypic correlation between disordered eating and alcohol use across various manifestations in females. Twin studies, which are a fundamental tool in this type of research, were used to distinguish between genetic and environmental influencers. While nonshared environmental influences did contribute to the disorders individually, they had a minimal impact on their concurrent appearance, especially in women.
Previous research has shown that concurrent eating disorders and risky drinking in younger teens can amplify the risk of adverse outcomes, including death. Shared genetic influences for the two conditions have been identified in studies across different age groups, and it has been suggested that changes in one disorder may worsen symptoms in the other.
The researchers behind the study believe that understanding the genetic and environmental factors involved in the co-occurrence of eating disorders and AUDs could greatly improve treatment and outcomes. Late adolescence is a critical period for the onset of these conditions, and the major transitions that occur during this time can increase susceptibility.
The study underscores the importance of adopting sex-specific treatment strategies for late adolescents who have concurrent disordered eating and problematic alcohol use. By screening late adolescents presenting with symptoms of either condition, healthcare professionals could potentially improve the detection and treatment of these disorders.
Although the study did not identify specific genetic or environmental factors affecting the co-occurring conditions, it highlights the need for further research on potential differences between countries and regions, as well as more diverse populations.
Overall, this study provides valuable insights into the genetic nexus between disordered eating and AUDs in adolescent twins. By understanding the underlying factors that contribute to these conditions, healthcare professionals can develop more effective treatment strategies and ultimately improve the lives of those affected.