http://articles.mercola.com/sites/articles/archive/2002/08/24/natural-hormone.aspxBy Stephen Bloom A natural human hormone, PYY3-36, has been found to decrease the hunger appetite. PYY3-36 is produced in the intestines after a meal and released into the blood in proportion to caloric intake. The hormone essentially signals the brainenCommunityServer 2008.5 SP1 (Build: 31106.3070)