PROBLEM TO BE SOLVED: To provide an ingredient which has agonistic activity to a RXR (Retinoid X Receptor) and/or a PPAR (Peroxisome Proliferator-Activated Receptor) and also has high safety.SOLUTION: The expression of a Retinoid X Receptor (RXR&alpha) and a Peroxisome Proliferator-Activated Receptor (PPAR&alpha, PPAR&delta, PPAR&gamma) can be activated, and the prevention, treatment or the like of various diseases can be safely and effectively performed by an agent including a beet fiber ethanol extract or the one obtained by working-refining the beet fiber ethanol extract as an active constituent.
