[Problem] To extend the life of the concentration of dissolved hydrogen molecules in water having the hydrogen molecules dissolved therein.[Solution] A method for producing water having hydrogen molecules dissolved therein, wherein the water contains hydrogen molecules at a concentration of 0.8 ppm or more. The method is characterized by allowing a stabilizer for dissolved hydrogen molecules to interact with electrolytically reduced water that contains hydrogen molecules, wherein the stabilizer comprises a sugar and/or a polyphenol.
