Why do I feel better after drinking sparkling water? The surprising science behind the fizz

October 25, 2025 •

4 min read

According to a study published in the European Journal of Gastroenterology and Hepatology, patients who drank sparkling water for two weeks showed improvements in gallbladder function, overall digestion, and constipation. This digestive aid is just one of several reasons why you might feel better after drinking sparkling water, with science revealing more benefits beneath the bubbles.

Quick Summary

The carbonation in sparkling water aids digestion, increases satiety to help with weight management, and can enhance mood. Its unique mouthfeel can also encourage higher water intake for better hydration.

Key Points

Enhanced Digestion: The carbonation in sparkling water can stimulate digestion and relieve symptoms of indigestion and constipation for many individuals.
Appetite Control: The bubbles in carbonated water can create a temporary feeling of fullness, which helps with appetite management and weight control.
Improved Mood: Studies suggest that drinking sparkling water can boost feelings of exhilaration and motivation, and reduce sleepiness.
Equivalent Hydration: Despite common myths, plain sparkling water is just as hydrating as still water and can encourage higher fluid intake for those who enjoy the fizz.
Healthy Soda Substitute: Unsweetened sparkling water provides a bubbly experience without the added sugar, calories, and artificial ingredients found in soft drinks.
Potential Bloating: While beneficial for some, the carbonation can cause bloating or gas in sensitive individuals or those with certain digestive issues.
Mindful Consumption: For dental health, opt for plain, unsweetened sparkling water and consider using a straw to minimize potential enamel effects from the mild carbonic acid.

The Surprising Reasons Why You Feel Better After Drinking Sparkling Water

While often seen as a simple substitute for soda, plain sparkling water offers a number of health benefits that can contribute to an overall feeling of wellness. The effervescence from the dissolved carbon dioxide gas interacts with the body in several fascinating ways, influencing everything from your digestive system to your mood. Understanding these mechanisms can help explain why a simple glass of bubbly water leaves you feeling so refreshed.

Improved Digestion and Constipation Relief

One of the most immediate and well-documented benefits of sparkling water is its positive effect on digestion. For those who experience frequent indigestion or constipation, a glass of sparkling water can offer significant relief. The carbonation may stimulate the nerves responsible for digestion, making the process more efficient. Some research, like the study from the European Journal of Gastroenterology and Hepatology, has shown that carbonated water provides relief from dyspepsia (indigestion) and constipation. This is particularly true for sparkling mineral waters that contain bicarbonate, which can neutralize excess stomach acidity. The fizzy sensation can also help prompt burping, which releases trapped gas and can alleviate feelings of bloating.

Enhanced Feelings of Fullness

For those managing their weight or simply trying to curb their appetite, sparkling water can be a powerful tool. The bubbles occupy space in the stomach, creating a sensation of fullness, or satiety. Research suggests that this effect can help people feel full faster and for longer than with still water, potentially leading to a reduction in overall calorie intake throughout the day. This makes it an excellent, calorie-free beverage to sip before or during a meal to help control portion sizes and prevent overeating.

A Better Mood and Sharper Mind

Believe it or not, sparkling water can also influence your mental state. A study found that drinking sparkling water under heat-stressed conditions led to increased motivation and exhilaration, and decreased sleepiness compared to still water. This effect was linked to increased cerebral blood flow, or blood flow to the brain, which is crucial for cognitive function. Beyond the physiological effects, the crisp, bubbly texture can simply be a more enjoyable and satisfying experience for many, providing a small but noticeable mood boost.

Comparison: Sparkling Water vs. Still Water


Feature	Plain Sparkling Water	Still Water (Tap/Plain)
Hydration	Just as hydrating, as proven by research.	The standard for effective hydration.
Satiety (Fullness)	The carbonation can increase feelings of fullness, helping manage appetite.	Does not provide the same sensation of fullness.
Digestive Support	Can improve digestion, relieve constipation, and reduce dyspepsia.	No specific digestive-enhancing properties beyond basic hydration.
Experience	The bubbly texture and unique mouthfeel can be more appealing for some.	Often perceived as more bland, though excellent for rapid hydration during exercise.
Dental Health	Minimally acidic and significantly less damaging to enamel than sugary sodas.	Neutral pH, poses no risk to dental health.
Cost	Can be more expensive than still water, especially bottled versions.	Very cost-effective, especially from the tap.

Cautions and Considerations

While plain sparkling water is a healthy choice for most, there are some potential downsides to consider. For some individuals, the carbonation can lead to gas, belching, and bloating. People with certain gastrointestinal conditions, like acid reflux or GERD, might find that carbonated drinks relax the lower esophageal sphincter, allowing stomach acid to flow back up. If you experience discomfort, it's best to switch to still water.

For dental health, plain sparkling water is relatively safe, but opting for flavored or sweetened versions can increase acidity and sugar content, posing a higher risk to enamel. To minimize any potential risk, consider drinking with meals or using a straw to limit contact with teeth. It's always best to choose plain, unsweetened options. To learn more about how diet impacts overall health, including hydration, consult reputable health sources like the National Institutes of Health.

Conclusion: The Final Word on the Fizz

Ultimately, sparkling water is an excellent, healthy beverage choice, especially when it's plain and unsweetened. It provides the same hydration benefits as still water, but its unique texture offers a refreshing and satisfying alternative that can help boost water intake for those who find plain water unappealing. The added benefits for digestion, satiety, and even mood make it more than just a fizzy treat—it's a truly functional part of a healthy nutrition diet. So the next time you reach for a bubbly drink, remember you're doing more than just quenching your thirst; you're also giving your body a little wellness boost.

Frequently Asked Questions

Plain, unsweetened sparkling water is only minimally acidic and is significantly less damaging to tooth enamel than sugary sodas or juices. However, flavored varieties with citric acid or added sugars can increase the risk of erosion.

For some people, particularly those with sensitive stomachs or conditions like IBS, the carbonation in sparkling water can cause gas and bloating. However, many people can consume it without issue, and some find it helps relieve bloating by promoting burping.

Yes, sparkling water is just as hydrating as regular still water. The carbonation does not hinder the body's ability to absorb water and can even help people drink more fluid throughout the day if they prefer the taste.

Yes, sparkling water can support weight management. The carbonation can increase feelings of satiety (fullness), which may lead to consuming fewer calories. It also serves as a zero-calorie, zero-sugar alternative to sugary beverages.

For some people, especially those with existing acid reflux or GERD, sparkling water can worsen symptoms because carbonation can relax the lower esophageal sphincter. If this is the case, it is best to stick to still water.

Studies have shown that consuming sparkling water can increase feelings of exhilaration and motivation while decreasing sleepiness, particularly in hot environments. This is thought to be related to its effects on cerebral blood flow.

The healthiest option is plain, unsweetened sparkling water with no added flavors, sugars, or artificial sweeteners. Sparkling mineral water can also provide beneficial minerals like calcium and magnesium.