PROBLEM TO BE SOLVED: To provide a preventive, improving, and therapeutic agent for a metabolic disorder with aging and/or a drink or a food having a preventive, improving, and therapeutic action for a metabolic disorder with aging.SOLUTION: A preventive, improving, and therapeutic agent for a metabolic disorder includes a culture and/or a bacterial cell obtained by culturing a lactic acid bacterium which belongs to Bifidobacteriumu longum as an active ingredient. A drink or a food which has a preventive, improving, and therapeutic action for a metabolic disorder is prepared, the drink or food including such an active ingredient.COPYRIGHT: (C)2015,JPO&INPIT【課題】 加齢に伴って発生する代謝異常症の予防・改善・治療剤及び/または加齢に伴って発生する代謝異常症の予防・改善・治療作用を有する飲食品の提供。【解決手段】 ビフィドバクテリウム・ロンガム(Bifidobacteriumu longum)に属する乳酸菌を培養して得られる培養物及び/または菌体を有効成分とする代謝異常症の予防・改善・治療剤、さらにこのような有効成分を含有してなる代謝異常症の予防・改善・治療作用を有する飲食品を調製する。【選択図】図1