PROBLEM TO BE SOLVED: To provide an retinoic acid receptor (RAR) activator that is a substance having high safety and no adverse effect even in continuous intake and activating an RAR and is useful for preventing or treating obesity, arteriosclerosis and leukemia, a food and beverage containing the same, medical product, supplement, food additive and feed.;SOLUTION: The retinoic acid receptor (RAR) activator comprises cryptoxanthin and/or a derivative thereof. Preferably the cryptoxanthin is derived from a citrus fruit.;COPYRIGHT: (C)2010,JPO&INPIT
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