It's a sad day when we find out that seltzer isn't as good for us as we think they are. Yes, sparkling waters are a great alternative to soda, especially when you find plain H2O a bit boring to drink in great quantities. And yes, they can help you avoid extra calories.
But it turns out the bubbles that make sparkling water so fun to drink are bad for your teeth. Behind the fizz is carbonic acid, which changes the chemical balance in your mouth and makes it more acidic. Too much acidity can wear away enamel, though not as quickly as soda, which is way more acidic than Perrier or other brands.
If you can't do without a glass or two, dentists advise drinking seltzer at mealtimes. And opt for the plain rather than the flavored kind (like orange or lemon-lime). Or you can just negate the effects by mixing the sparkling water with H2O from the tap. Or just swishing with water after you've had a glass of the bubbly kind.
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