An adiponectin secretion regulator capable of efficiently expressing the effects of adiponectin while avoiding the deleterious increase of appetite concomitant with adiponectin is provided, along with food and drink products, functional food products, cosmetics, pharmaceuticals, and animal feed having such adiponectin secretion regulating effects. As an active ingredient of the adiponectin secretion regulator, fucose or a precursor thereof is used. By including fucose or a precursor thereof at a predetermined amount, the food and drink products, functional food products, cosmetics, pharmaceuticals and animal feed having the adiponectin secretion regulating effects are prepared.
