PROBLEM TO BE SOLVED: To provide an agent for preventing and/or treating a life-style related disease (metabolic syndrome) by using an active ingredient of Citrus Sudachi.SOLUTION: It has been discovered that sudachitin of an active ingredient contained in Citrus Sudachi has effects for promoting expression of PPARγ, adiponectin and GLUT4. An expression promoter of the PPARγ, the adiponectin and the GLUT4, especially an agent for preventing and/or ameliorating a life-style related disease (metabolic syndrome) uses the sudachitin as an active ingredient based on the effects.COPYRIGHT: (C)2013,JPO&INPIT【課題】スダチの有効成分による、生活習慣病(メタボリックシンドローム)の予防及び/又は改善剤の提供。【解決手段】スダチに含まれる有効成分であるスダチチンに、PPARγ、アディポネクチン及びGLUT4の発現促進効果があることが見出された。この効果に基づいたスダチチンを有効成分とする、PPARγ、アディポネクチン及びGLUT4の発現促進剤、更に、生活習慣病(メタボリックシンドローム)の予防及び/又は改善剤。【選択図】なし