PURPOSE: A composition for preventing or curing the metabolic syndrome related-diseases is provided to prevent or cure metabolic syndrome-related diseases including the obesity the hyperlipidemia, the hypertension, the arteriosclerosis, or the hyperinsulinemia etc. by using a 4-hydroxytamoxifen analog (GSK5182) which suppresses a fat synthesis, lowering glucose levels in blood, reducing the total cholesterol in blood, and reducing body fat.CONSTITUTION: A pharmaceutical composition for preventing or curing metabolic syndrome related-diseases comprises the chemical formula 1 of 4-hydroxy tamoxifen analog or its pharmaceutically acceptable salt as an active ingredient. The composition additionally comprises a pharmaceutically acceptable carrier. The metabolic syndrome related-diseases are more than one selected from a group comprising the obesity, the hyperlipidemia, the hypertension, the arteriosclerosis, and the hyperinsulinemia. The composition suppresses accumulation of fat, and reduces size of fat cell and body fat.COPYRIGHT KIPO 2013[Reference numerals] (AA) Weight (BB) Fat weight (CC) Before injection (DD) After injection (EE,GG,KK,JJ) Control group (FF,HH,LL) GSK5182 injected group (II) Fat ratio본 발명은 4-하이드록시 타목시펜 유사체 또는 이의 약학적으로 허용가능한 염을 유효성분으로 포함하는 대사증후군 관련 질환의 예방 또는 치료용 약제학적 조성물, 상기 조성물을 이용한 대사증후군 관련 질환의 예방 또는 치료 방법 및 4-하이드록시 타목시펜 유사체를 포함하는 대사증후군 관련 질환의 예방 또는 개선용 식품 조성물에 관한 것이다.