I would definitely volunteer:
http://abcnews.go.com/Health/freezing-hunger-nerve-weight-loss/story?id=53912867
http://abcnews.go.com/Health/freezing-hunger-nerve-weight-loss/story?id=53912867
For a small study based at Emory University School of Medicine, Porlogo and researchers tried a minor surgical procedure on the study's participants where a probe was inserted into the patient’s back, freezing the nerve for two minutes, with the guidance of live images from a CT scan. By freezing the nerve, the hunger signal was shut down.