<;P>;PROBLEM TO BE SOLVED: To provide a prophylactic and/or curative agent of natural origin for dealing with fatty liver. <;P>;SOLUTION: The prophylactic and/or curative agent for fatty liver is characterized in comprising, as active ingredient, macromolecular polyphenols extracted from fermented tea such as oolong tea or black tea. <;P>;COPYRIGHT: (C)2008,JPO&INPIT