A 67-year-old male comes to the clinic for a health maintenance visit. His past medical history is significant for chronic allergic rhinitis, severe chronic obstructive pulmonary disease (COPD), osteoporosis, psoriasis, atrial fibrillation, and benign prostatic hypertrophy. Vital signs show his temperature is 36.8 C (98.2 F), pulse is 76 beats/minute, respiratory rate is 12 breaths/minute, and blood pressure is 118/70 mmHg. His weight is 129.2 kg (285 lbs) and his body mass index (BMI) is 41. Which of his co-morbidities is most likely to be associated with his BMI?