Is it safe to replace water with diet coke?

Water is Best!: Soda pop contains corrosive acids such as citric, malic, tartaric carbonic or phosphoric which, can remove calcium from tooth enamel. Without protection from the dental enamel, the tissue underneath is susceptible to cavities, root canals & even extractions. Sugar is an additional cavity causing issue, so consider rinsing your mouth after drinking soda, both diet & soda containing sugar.

Not a good idea!: Among other issues, diet coke has a ph of about 3.2. It is very acidic and can erode the enamel of your teeth. An occasional diet coke is probably ok. Many other medical specialist will also tell you how bad it is for your general health. It has phosphoric acid which contributes to loss of bone density! so many reasons to avoid this beverage!