CONCLUSION: Our study was the first to clarify the potential role of loneliness in the cognitive dysfunction and appetite hormone dysregulation associated with ADHD. The co-condition of ADHD and loneliness was related to greater impairment in executive function. Increased levels of leptin were more specific to ADHD than loneliness. Further longitudinal follow-up studies are required to clarify the temporal associations between executive dysfunction, appetite hormone dysregulation, and loneliness…
