Deuterium Depleted Water (DDW)What is deuterium and Preventa deuterium depleted drinking water? Deuterium, a. k. a. heavy hydrogen, is a naturally occurring stable non radioactive variation of hydrogen. The atomic nucleus of hydrogen consists of one proton only, but the deuterium nucleus contains one proton and one neutron. This considerable, twofold mass difference causes significant differences in the physical and chemical properties of hydrogen and deuterium. Preventa, the