WHY IS DEUTERIUM IMPORTANT?
When a deuterium atom replaces hydrogen, it changes everything. This is due to its large kinetic isotope effects (KIE). The difference in size and weight of the deuterium atom changes the reaction rate of any biochemical process by a magnitude it participates in when one of the hydrogens is replaced by its stable isotope. It also changes the function and efficiency of any structure it is part of.
Deuterium is also a growth- and transforming factor for all microbes, including virus hosting cells and viruses, while deuterium is an oncoisotope in mammalian cells with mitochondria.