PROBLEM TO BE SOLVED: To provide a PGC1α expression promoter.SOLUTION: The invention provides a PGC1α expression promoter containing (a) caffeine, and (b) phospholipid containing ω3 unsaturated fatty acid as a constituent fatty acid.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】PGC1α発現促進剤の提供。【解決手段】(a)カフェインと、(b)構成脂肪酸としてω3不飽和脂肪酸を含むリン脂質とを含有するPGC1α発現促進剤。【選択図】なし