IL6 and obesity due to melanocortin 4 receptor deficiency: The results of earlier studies indicate that the obesity reducing action of IL‐6 is primarily exerted in the brain.6, 10, 12, 13 Therefore, it could be of value to identify cells that contain interleukin‐6 receptor‐α (IL‐6Rα) and determine whether these cells are located in regions that influence food intake and energy balance.