Hydrogen therapy can be an important anti-aging and healing tool. Hundreds of studies confirm that hydrogen is safe, highly effective for the treatment of numerous diseases, for improving energy and sports performance and for promoting longevity. Let us see more about this incredible resource for our health and wellness. What's Hydrogen inhaling therapy and what are the known benefits. Hydrogen therapy uses molecular hydrogen (H2), which is a molecule that forms naturally when two hydrogen atoms are combined. Molecular hydrogen is the smallest element in the universe and its small size allows it to quickly permeate and penetrate all tissues and cells of the body. When it comes to natural therapies to combat chronic diseases, the use of molecular hydrogen is probably not the first therapeutic aid to come to mind. This tasteless and odorless gas could be the key to defeating devastating pathological conditions such as cancer, autoimmune diseases, diabetes, and arthritis.