You should not drink soda, if you suffer from gastritis, because the carbon dioxide disrupts the normal acidity of the stomach, and gas struts, and it interferes with the normal operation. The gas bubbles act negatively on the mucosa, so for people suffering from an ulcer, hyperacidity and several other diseases of the stomach and intestine, before drinking water, it is necessary to release gas from the bottle. Also, the carbon dioxide changes the pH value (pH), water (considered optimum pH in the range of from 6.5 to 8.5), acidifies body fluids, and prolonged use of the blood becomes more acidic, which creates conditions for the development of many diseases. Furthermore, the use of highly carbonated beverage leads to the destruction of tooth enamel, which has a protective function for our teeth. As a result, the teeth become more sensitive, less stable and react to cold, hot and sour. Erasing enamel leads to tooth decay and caries. Natural sparkling water . Source:-http://mouthwash-oral-hygiene.blogspot.com/2017/02/side-effects-of-carbonated-water-soft.html

1. Top 5 side effects of carbonated water on human body that we don't know or ignore it.
1: Sweet soda destroys tooth enamel
The composition of sweet drinks often includes orthophosphoric acid (E 338). The presence of this
ingredient not only destroys the enamel (it simply dissolves it), but also causes a lack of calcium in the
body and also contributes to the appearance of urolithiasis (kidney stones, and urinary bladder).
2: Soda does not quench thirst
The same phosphoric acid mentioned above has a dry throat feature, thus provoking thirst. It turns out
that drinking sweet carbonated water; we do not quench thirst, but rather contribute to it. The more
soda we drink, the thirstier.
3: Soda may cause allergic reactions
Often, the composition of soda ingredients includes sodium benzoate (E 211). This additive is used in
carbonated beverages as a preservative, and may cause allergic reactions. Further, sodium benzoate has
a carcinogenic effect. Therefore, it is fair to say that sugary soft drinks contribute to the development of
cancer.
4: Sweet drinks can increase blood pressure
That soda that contains caffeine in its composition, can lead to high blood pressure have a certain group
of people. Therefore, it should be excluded from the use of people with hypertension.
5: If you drink more than one glass of soda a day, you - at risk
According to research by American scientists, those who consume a day more than 1 cup sweet drinks
are at risk of developing diabetes and the occurrence of cardiovascular diseases.