Hydrogen is the smallest molecule in nature. When hydrogen enters the human body, it can easily pass through many obstacles to reach the inside of the cell and improve its state. This is something that many drugs, vitamins, Tea Polyphenols and others don't have, because their molecules are too big, much bigger than hydrogen molecules, to reach the inside of the cell. And because hydrogen is so diffusible, it can reach all parts of the body, not just to help one organ heal, but to improve a whole range of organ functions. That's why when people use hydrogen to treat one disease, it can help heal many others at same time.