PROBLEM TO BE SOLVED: To solve the problem, e.g., that, regarding the conventional peroxisome proliferator-activated receptor (PPAR) activator having improved lipid metabolism and carbohydrate metabolism, and used for the treatment, prevention or improvement of diabetes, hyperlipemia and obesity, the one of synthetic substance series has a question of side effect, and the one derived from natural components has a low content.SOLUTION: The peroxisome proliferator-activated receptor (PPAR) activator causing no side effect and inexpensively producible comprises an advanced glycation end product (AGE) as an active ingredient.
