To provide a food composition having promoted potato proteinase inhibitor II action and exhibiting increased effect for suppressing the sense of hunger, wherein potato proteinase inhibitor II is a known protein, used e.g. for increasing the fasting plasma level of cholecystokinin and expected to be usable for controlling the sensation of fullness and food ingestion amount by the increase of cholecystokinin.

The food composition comprises collagen and potato proteinase inhibitor II. Further provided is a food composition comprising polyphenols and potato proteinase inhibitor II.