New study dims hopes for a quick fat cure.
Researchers found high levels of hormone leptin in very obese people, leading them to doubt that additional leptin would have a slimming effect as it had in mice who lost weight after leptin injections. New study dims hopes for a quick fat cure. Mr. Bradford S. Hamilton, a Ph.D. candidate at the Sunnybrook Health Science Center in North York, Ontario and the University of Toronto in Ontario, an author of one study.