We read with interest the analysis of mental disorders among 114,248 attendees of 237 specialized centers for obesity care reported by Galler et al. [1]. The overall prevalence of mental disorders was 3.5%, of whom 42.5% had a diagnosis of attention deficit hyperactivity disorder (ADHD).

We noted that those diagnosed with depression, anxiety and eating disorders, had higher baseline rates of severe obesity than those without with mental disorders. However, the prevalence of severe obesity in those with ADHD was actually lower than those with no known mental disorder. They also had a lower baseline BMI z-score.