Seltzer craze: Is sparkling water good or bad for you?

Sparkling water has become big business and is the go-to drink for some people who are looking to cut back on sugary beverages. But the drink's popularity has given rise to some health questions.

It's a fizzy favorite, sugar free, calorie free and hydrating.

"It makes you feel like you're drinking something that isn't water, and so psychologically, there's something in effervescence," writer Mary Choi said. "This is an exciting mouth experience."

Water sales are booming, and Americans spent $2.3 billion on seltzer or sparkling water between May 2016 and May 2017. And many are trading in sugar-heavy soft drinks. But is it actually good for you?

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Trying to create healthier habits, Choi started making seltzer beverage of choice, drinking anywhere from five to 14 per day.

While many see seltzer as a low sugar alternative to drinks like juice and soda, there are new questions about whether all those bubbles are really good for you. Some speculate the carbonation could cause bloating or heartburn and damage teeth by eroding enamel.

But experts say seltzer fans can relax, because carbonated water is basically harmless. While it may cause heartburn in some people, there's no evidence it poses a serious threat to your tooth enamel. Still, moderation is key.

"According to the research, I haven't seen any harmful effects," nutritionist Rachel Beller said. "I think someone drinking it all day may want to hold back a little bit, and look at diversifying their beverages."

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