Molecular hydrogen is hydrogen in its formative stage. It is a pure hydrogen molecule that has been created right there and then, and as such has the ability to bond with other substances immediately. In the case of the human body, this means substances that can potentially harm the body. As a result of this bonding, a fluid that our body expels through the excretory organs is created. The uniqueness of hydrogen molecules lies in the fact that, because of their size, they are able to penetrate without any barriers into the different parts of the body where they can perform their function.