Okay, here’s where things get a little gritty. Seltzer is slightly more acidic than regular water because carbonic acid forms when CO₂ dissolves. That fizzy zing? It’s a tiny acid bath for your enamel. Don’t panic—plain seltzer is nowhere near as damaging as soda, which has sugar plus way more acid. But if you’re sipping it all day long, you’re basically giving your teeth a low-grade acid rinse.
Dentists say the risk is real but manageable. Drink it quickly instead of nursing it for hours, and maybe rinse your mouth with plain water after. And whatever you do, don’t brush your teeth right away—you’d just be scrubbing acid into your enamel like a maniac. (Yes, I learned that the hard way. My dentist was not amused.)
What About Your Bones?
I’ve heard the rumor that carbonated drinks leach calcium from your bones. That myth comes from cola studies, not seltzer studies. Colas contain phosphoric acid, which messes with calcium—plain seltzer does not. So, go ahead and fizz away without worrying about your skeleton turning into chalk. Your bones are safe from the bubbly revolution.
Seltzer Vs Sparkling Water: Differences, Benefits, And Myths - Carbon8
But if you’re adding flavored syrups or “essence” drops to your seltzer, check the label. Some contain citric acid, which is even tougher on enamel, or sneaky sugar alcohols that can upset your stomach. That “healthy” grapefruit seltzer might secretly be a troublemaker. The plain stuff? Your body barely notices the difference from still water.
