PROBLEM TO BE SOLVED: To provide compositions which have high safety and an excellent effect of reducing body fat and neutral fat such as visceral fat and subcutaneous fat, and to provide foods, medicaments, and feed containing the compositions.SOLUTION: The oral administration composition is a composition characterized by comprising a carotenoid and a sphingolipid, preferably comprising a cryptoxanthin and a sphingolipid, and the cryptoxanthin and/or sphingolipid is derived from citrus, which is preferably Citrus unshiu, and has the effect of reducing body fat and/or neutral fat.