Diet composition can influence ingested behavior, including hedonic aspects and metabolic consequences that affect the drive to eat.

“I believe that the composition of the diet can influence aspects of ingested behavior I emphasize the hedonic aspect but I'm certainly open to the possibility that if you feed a diet of you know divergent composition you will definitely have some influence I mean this is well documented on the substrates that are in the circulation as a result of feeding that diet those substrates themselves metabolites you were mentioning fatty acid but many other things change may themselves have a effect on the drive to eat”