The improvement or resolution of many of conditions is more common after weight loss surgery than other weight loss strategies, Dr. Yancy says. “Diabetes is the condition that very frequently resolves […] although the resolution does not always last,” he adds. “Interestingly, the improvement in diabetes occurs rapidly after surgery, before there is substantial weight loss. So the effect is likely nutritional and may also be related to hormone changes that occur after surgery. This is an area of intensive research,” he adds.