Hydrogen is a colorless gas and it is the most abundant element on earth, making up a whopping 75% of the mass of the entire Universe. Molecular hydrogen, or H2, is the smallest element and lightest molecule known to man. At this point, you may be wondering what any of this has to do with you, and your health; and the answer is A LOT. There are currently hundreds of studies that have been published confirming the use of H2 therapy as a beneficial treatment for halting the aging process, increasing energy, boosting immunity, and both helping to prevent and to treat numerous diseases. And the best part of all is that H2 therapy is safe, cheap, simple and side-effect free.