Knowing the properties of H2O and D2O, do you think that D2O can be used for drinking purposes?
Heavy Water or D2O is used as coolant in the nuclear reactors and it has the ability to slow down the rate of a chemical reaction. With consideration of this property of heavy water, it is clearly understood that it is not fit for human consumption as it can also slow the metabolic reactions taking place in the body. Hence heavy water is not fir for human consumption.