Is the satisfying fizz of your favorite sparkling water putting you at risk for tooth decay? Because any drink with carbonation—including sparkling water—has a higher acid level, some reports have questioned whether sipping sparkling water will weaken your tooth enamel (the hard outer shell of your teeth where cavities first form).
According to available research, sparkling water is generally fine for your teeth—and here's why. In a study using teeth that were removed as a part of treatment and donated for research, researchers tested to see whether sparkling water would attack tooth enamel more aggressively than regular lab water. The result? The two forms of water were about the same in their effects on tooth enamel. This finding suggests that, even though sparkling water is slightly more acidic than ordinary water, it's all just water to your teeth.