Why This Very Popular Drink Is Ruining Your Teeth

These Everyday Drinks Feel Refreshing—But Here’s Why They Might Be Secretly Hurting You

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My Longevity Experiment
March 31, 2025

Health Benefits of Sparkling Water: What You Need to Know

“Still or sparkling?” It’s a familiar question at cafés and restaurants, and most people have a clear preference. But beyond taste and texture, is there a real difference between still and sparkling water when it comes to health? The answer may surprise you.

What Makes Sparkling Water Sparkle

This discussion focuses specifically on the comparison between still filtered water and carbonated filtered water, commonly referred to as "sparkling water" or "unflavored seltzer." While soda water, mineral water, tonic water, and flavored waters may appear similar, they are not identical products.

Sparkling water gets its characteristic fizz through the infusion of carbon dioxide into filtered water. This chemical reaction produces carbonic acid, making sparkling water more acidic than still. Typically, sparkling water has a pH of around 3.5, compared to still water’s pH, which ranges from 6.5 to 8.5 and is closer to neutral.

Hydration: Sparkling vs. Still

Hydration remains one of the most critical functions of water, regardless of the variety. Scientific research confirms that both still and sparkling water hydrate the body equally well.

Some individuals believe that bottled water is healthier than tap water. However, in Australia, tap water is subject to rigorous monitoring standards. Additionally, it contains fluoride, which has proven benefits in preventing tooth decay and cavities in young children, something most bottled waters lack.

Whether still or sparkling, plain water is a far better option than artificially sweetened beverages or fruit juices, which often contain added sugars and minimal nutritional benefit.

Teeth and Bones: Is Sparkling Water Harmful?

Concerns about sparkling water damaging teeth or bones are not supported by current scientific evidence. There is no proof that carbonated water contributes to bone deterioration. Studies linking soft drinks to fractures usually highlight the negative impact of obesity, rather than carbonation itself.

That said, the acidity of sparkling water can soften tooth enamel. While not generally a significant issue, the risk increases when sparkling water is mixed with sugar or citrus juice, both of which have higher acidity and can harm dental enamel more significantly.

Individuals who grind their teeth may experience enhanced wear if enamel is already softened. Similarly, those undergoing home teeth-whitening treatments might find sparkling water affects tooth coloration.

Importantly, substantial damage would only occur if large amounts of sparkling water were held in the mouth and sipped over prolonged periods.

Sparkling Water and Digestion

A widespread belief persists that drinking water, of any kind, with meals hampers digestion. This is unfounded. While, in theory, water could dilute stomach acid, in practice, the digestive system adapts to the overall consistency of food and drink.

Some individuals experience digestive discomfort from carbonated drinks, such as bloating, gas, or cramping. This is due to the buildup of gases in the stomach. For people with an overactive bladder, the acidity of sparkling water may further irritate the urinary tract.

Interestingly, the intense fizzy sensation sparkling water produces in the mouth fades as the individual consumes more of it.

Temperature Matters: Cold vs. Room Temperature Water

Once you've chosen still or sparkling water, the next question is often about temperature. Does drinking cold water have different effects compared to water at room temperature?

Although studies on this topic are limited, there is some evidence that cold water, especially at temperatures near 2°C, can slow gastric contractions and potentially delay digestion. Additionally, extremely cold water may constrict blood vessels and cause stomach cramping in some individuals.

Conversely, other studies suggest cold water could slightly increase metabolic rate, as the body works to raise the water to body temperature. However, this effect is minimal and unlikely to produce any significant weight loss.

Still or Sparkling: Which is Better?

Ultimately, both still and sparkling water offer excellent health benefits. They hydrate the body effectively, aid in digestion, and contain no calories or sugars, making them far superior to sugary drinks and juices.

For those concerned about tooth enamel, a helpful strategy is to follow sparkling water with a glass of still water. This simple rinse can help neutralize acidity and protect dental health.

Your Call to Action for Choosing Sparkling or Still Water

Choosing between still and sparkling water comes down to personal preference, but from a health perspective, both are excellent choices. If you're trying to increase hydration, cut out sugary drinks, or simply enjoy a refreshing alternative, either option fits the bill. To protect your teeth, enjoy sparkling water in moderation and rinse with still water afterwards. And remember, whether you prefer bubbles or not, the most important thing is staying well-hydrated every day.

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