PROBLEM TO BE SOLVED: To provide a material having highly effective and safely lowering brain function even if applying over a long period of time.SOLUTION: An inhibitor for lowering brain function contains seeds of green soybeans or a solvent extract thereof.COPYRIGHT: (C)2012,JPO&INPIT【課題】有効性が高く、且つ長期間に渡って適用しても安全な脳機能低下抑制作用を有する素材の提供。【解決手段】青大豆種子又はその溶媒抽出物を含有する脳機能低下抑制剤。【選択図】なし