TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The hydrogen ion is produced by dissolving and dissociating organic acid or carbon dioxide gas in water. The hydrogen gas is blown into water and hydrogen molecule is dissolved in it. The method involves performing cathode electrolysis of acidic aqueous solution containing organic acid, producing hydrogen molecule through the electrolysis and co-existing hydrogen molecule and hydrogen ion. The method involves supplying the acidic aqueous solution in intermediate chamber between anode and cathode of electrolytic cell and producing hydrogen molecule, and coexisting hydrogen ion. The water is deaerated and the hydrogen molecule and hydrogen ion are coexisted. Preferred Amounts: The concentration of hydrogen molecule is 0.1 ppm or more. The concentration of hydrogen ion is 10-7 M or more. ACTIVITY - Antihypertensive; Anorectic; Antidiabetic; Dermatological. Body weight of 10 male and female subjects (32-55 years) was measured. The subjects were then ingested with 250 ml of water containing hydrogen ion and hydrogen molecule in the morning and at the time of hunger. After three months, the body weight of the subjects was measured and compared with the initial body weight. The results showed that the body weight (in kg) was reduced from 65, 55, 58, 72, 80, 60, 63, 85, 79 and 85 to respectively 63, 51, 55, 71, 75, 59, 60, 81, 71 and 79.    MECHANISM OF ACTION - Antioxidant.    EXAMPLE - Lactic acid (1 mg) was dissolved in deaerated pure water (2000 ml). Hydrogen gas was dissolved in the obtained solution and week alkaline solution (control), and the over-time change of dissolved hydrogen concentration was measured. The obtained solutions were stored in polyethylene terephthalate or glass bottle. The life-time of the hydrogen molecule dissolved water was extended for 5 months. The results showed that the coexistence of lactic acid enabled interaction of hydrogen ion and hydrogen molecule, and the hydrogen ion produced from the acid stabilized the dissolved hydrogen molecule.