A nurse is assisting with teaching a class about long-term effects of childhood obesity. The nurse should include which of the following conditions as a potential complication of childhood obesity?

A. Diabetes mellitus: Childhood obesity increases the risk of developing type 2 diabetes mellitus due to insulin resistance. B. Attention-deficit/hyperactivity disorder (ADHD): ADHD is a neurodevelopmental disorder, not a known complication of obesity. C. Hypotension: Obesity is more commonly associated with hypertension, not low blood pressure. D. Rheumatoid arthritis: While joint pain can occur with obesity, rheumatoid arthritis is an autoimmune disease, not directly caused by obesity.