The unpaired oxygen atom, known as "free radical", is missing electrons and seeks to "borrow" them from other substances. This results in oxidation which, when it occurs in the human body, can cause serious cell damage and various disease conditions. Hydrogen has a very unique restoration power. When Hydrogen ions encounter a free radical, they bond with it to form water, neutralizing potential oxidative damages caused by these free radicals.
Overly powerful antioxidants may eliminate even essential ROS in our body. However, the tiny Hydrogen ions only restore ROS ("Reactive Oxygen Species" such as hydroxyl radical) with the strongest oxidation reaction. Because of its tiny size and rapid movements, hydrogen can enter even the core of the smallest cells. Hydrogen can also rapidly reach Mitochondrion, where the most ROS are generated, and quickly neutralize them.