There is debate as to whether or not soda causes kidney stones. Some "experts" say that it is the dark colored sodas that contain phosphoric acid (Coke, Pepsi, Dr. Pepper, Root Beer) that can contribute to kidney stones.
Other experts claim that drinking Ginger ale, 7 Up, Mountain Dew, Orange soda, etc. are okay because they contain citric acid and citric acid helps to battle kidney stones.
Others then say that it's the sugar sweetened sodas that may be the problem and then other studies show that it's the diet sodas that are bad ???????
What to do?
For me, it's moderation.
Less soda, more water and continue finding healthy alternatives.