PROBLEM TO BE SOLVED: To evaluate the state of metabolism including carbohydrate remainder without need of blood collection etc.SOLUTION: A metabolism evaluation device 10 comprises: an acquisition part 12 which acquires from a measurement part 18 a measured ketone body concentration obtained by measuring a ketone body discharged from a user's body； an arithmetic part 14 which calculates user's carbohydrate remainder and fat consumption on the basis of information regulating the relation between the ketone body concentration and the residual carbohydrate in a human body stored previously in a storage part 20 and the acquired measured ketone body concentration； and an output part 16 which outputs the calculated user's carbohydrate remainder and fat consumption.SELECTED DRAWING: Figure 1【課題】血液の採取等を必要とすることなく糖質残存を含む代謝の状態を評価する。【解決手段】代謝評価装置１０は、取得部１２が、利用者の体から排出されたケトン体を測定した測定ケトン体濃度を測定部１８から取得し、演算部１４が、記憶部２０に予め記憶された、ケトン体濃度と人体の糖質残存との関係を規定する情報、及び、取得された測定ケトン体濃度に基づいて、利用者の糖質残存及び脂質消費を演算し、出力部１６が、演算された利用者の糖質残存及び脂質消費を出力する。【選択図】図１
