Updated on | Hydration & carbonated water facts
Quick Answer: Yes, sparkling water hydrates you just as well as still water. The carbon dioxide that creates the bubbles does not reduce how much water your body absorbs. As long as it is unsweetened and caffeine-free, plain sparkling water counts fully toward your daily fluid intake, ounce for ounce, the same as tap water.
- Hydration level: Equal to still water
- Calories: 0 (for plain sparkling water)
- Best choice for: People who struggle to drink enough plain water
Sparkling water has become a popular alternative to soda and sugary drinks. But does the fizz change how hydrating it is? Many people wonder if carbonation reduces hydration or even causes dehydration. Here’s what the science actually says.
What Is Sparkling Water?
Sparkling water is water that contains dissolved carbon dioxide gas, creating natural or added carbonation. It includes:
- Club soda – carbonated + added minerals
- Seltzer water – carbonated, usually flavored
- Mineral sparkling water – naturally carbonated from springs
- Soda water – another term for carbonated water
Most sparkling waters contain zero calories, zero sugar, and no artificial sweeteners unless flavored.
Does Sparkling Water Hydrate You?
Yes. Plain sparkling water hydrates you just as effectively as still water. Research shows that carbonation does not interfere with the body’s ability to absorb water. Once the carbon dioxide leaves the liquid, your body treats what remains exactly like regular water. The only practical difference is that the bubbles can make you feel full sooner, so it may be harder to drink a large amount quickly after exercise.
What Science Says
| Study Finding | What It Means |
|---|---|
| Carbonation does not affect hydration rate | Sparkling water hydrates the body equally well. |
| Carbonated drinks stay in the stomach slightly longer | May help you feel fuller, aiding appetite control. |
| Carbonated water may improve swallowing | Helpful for people who avoid plain water. |
Benefits of Sparkling Water
- Improves hydration: Many people drink more water when it’s carbonated.
- No sugar or calories: A healthier alternative to soda.
- Easier to drink: Adds flavor and fizz for those who dislike plain water.
- Good for digestion: Carbonation may reduce constipation or indigestion for some.
Possible Downsides
- Can cause bloating: Carbon dioxide gas expands in the stomach.
- Acidic: Slight acidity may affect tooth enamel if consumed excessively.
- Flavored versions: May contain sweeteners or citric acid.
Sparkling Water vs Still Water
| Feature | Sparkling Water | Still Water |
|---|---|---|
| Hydration | Equal hydration level | Excellent hydration |
| Digestive effects | May reduce indigestion | Neutral |
| Teeth | Slight acidity | No acidity concerns |
Related Guides
- Is Sparkling Water Good for You?
- Is Sparkling Water Bad for Your Teeth?
- What Is Still Water?
- Daily Water Intake Guide
FAQs
Does sparkling water count toward daily water intake?
Yes. As long as it’s unsweetened and caffeine-free, sparkling water counts the same as regular water toward your daily fluid goal.
Is sparkling water bad for your teeth?
It’s slightly acidic, but far less harmful than soda or juice. Drinking it with meals and not sipping all day helps reduce acid exposure.
Can sparkling water dehydrate you?
No. Carbonation does not cause dehydration and does not act as a diuretic in plain sparkling water.
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