Plain carbonated water, without added sugar or artificial sweeteners, is a distinct question from soda, and the carbonation itself carries less risk than online claims about "damaging your gut lining" suggest. Carbonated water is simply water infused with carbon dioxide gas, which forms a small amount of carbonic acid, mild enough that it doesn't meaningfully change how your digestive system handles the drink.
The carbonation can also help in specific ways, countering the idea, addressed in the myth that chronic bloating is normal, that any fizzy drink is automatically a problem. Carbonic acid stimulates nerve receptors involved in swallowing, which can help some people, including those with mild swallowing difficulty. The gas also creates a feeling of fullness by stretching stomach receptors, which some people find useful for appetite management.
What to do with this
Plain sparkling water is a reasonable, low-risk swap for sugary soda, with no meaningful evidence that carbonation itself harms your gut lining or bacteria balance. If it reliably causes bloating for you, drink it more slowly and in smaller volumes, and check whether a flavored version's sweetener, not the bubbles, is the actual trigger, the same troubleshooting approach covered in a same-day recovery plan for bloating after eating out. No need to avoid it for gut-health reasons if you tolerate it well and simply enjoy it.
