Carbonated drinks are bad for you in excess due to the phosphorus that carbonated drinks contain which leads to kidney problems which can also lead to the loss of calcium from your body through your kidneys.
Drinking too many carbonated drinks can also cause calcium loss in bones, causes tooth decay and irritable bowel syndrome as well.
All carbonated drinks including soda is bad for kidney health and bladder health when you drink the carbonated drinks in excess.
But drinking carbonated drinks and soda in moderation won't do you any harm but if you want to keep your kidneys healthy and your body healthy then make sure to drink some water and other healthier drinks.