Highlights
Individuals with higher levels of Attention-Deficit/Hyperactivity Disorder (ADHD) traits at age 10 face a significantly increased risk of physical multimorbidity and health-related disability by age 46. The association is partly driven by modifiable life-course factors, including tobacco use, elevated Body Mass Index (BMI), and psychological distress. Notably, while the risk for physical conditions is consistent across genders, women with childhood ADHD traits exhibit a disproportionately higher burden of physical health-related disability in midlife compared to men.
