Adverse childhood experiences (ACEs) are associated with multiple negative health behaviors and consequences including both physical and mental health conditions in adulthood. Previous studies have commonly examined the impact of ACEs on a single outcome. However, recent evidence shows that exposure to ACEs may also increase the risk of multimorbidity such as overweight or obesity in combination with mental health conditions. This project will explore this, and the mechanisms through which the co-occurrence of overweight/obesity and mental health problems might arise.