These people should know better than to use the term "weight loss" when in fact fat loss, particularly visceral fat, is the goal. Muscle loss and the problems that come with it (e.g. frailty, reduced glucose uptake) could negate much of the fat loss benefit, so until a meaningful population has shown that they can come off of the drugs, rebuild muscle, and retain a healthy body composition and overall health, then these can't be considered a success.
