Protein Possible Key to Obesity Hormone's Effect on Brainhttp://articles.mercola.com/sites/articles/archive/2002/04/27/obesity-hormone.aspxAlthough the "obesity hormone" leptin can spur weight loss in laboratory animals, it's not very helpful for overweight humans, who actually have lost their sensitivity to the hormone and have extra-high levels in their blood. Now a new studyenCommunityServer 2008.5 SP1 (Build: 31106.3070)