A recent study on the effects of the flavone 7,8-dihydroxyflavone on mice discovered something rather surprising; that it limited weight gain in mice fed a high-fat diet – but only in female mice. 
Royal jelly is the special food that is fed to bee larvae that transforms them into new queens instead of ordinary worker bees. It is comprised of about 3-7% lipids, of which the unsaturated medium-chain fatty acid known as “queen bee acid” is the major component.
Although the ingredient that effects the massive increase in body size is believed to be the protein “royalactin”, other royal jelly ingredients like queen bee acid have some very interesting effects in their own right.
Nomenclature: (RS)-2-(2-oxo-4-phenylpyrrolidin-1-yl)acetamide or N-carbamoylmethyl-4-phenyl-2-pyrrolidone
Synonyms: 4-phenylpiracetam, phenylpiracetam, carphedon, carphedone, carfedone, entrop, phenotropil, fenotropil, phenotropyl.