Skip to content

Is Seltzer a Healthy Drink? The Definitive Guide

4 min read

According to a 2025 article by EatingWell, plain seltzer can be a great way to stay hydrated, especially for those who find still water boring. But is seltzer a healthy drink for everyone, or are there hidden downsides to all those bubbles? This guide explores the facts so you can sip smarter.

Quick Summary

An analysis of seltzer water's health profile, covering benefits like hydration and appetite control, while addressing concerns such as dental erosion and digestive issues. The comparison with other beverages clarifies how to make the healthiest choice based on your individual needs.

Key Points

  • Hydrates Effectively: Plain, unsweetened seltzer is just as hydrating as still water, making it a great alternative for those who dislike the taste of flat water.

  • Supports Weight Management: As a calorie-free alternative to sugary drinks, seltzer helps reduce overall calorie intake and its carbonation can increase feelings of fullness.

  • May Aid Digestion: For some, the carbonation can assist with indigestion by encouraging burping and promoting feelings of fullness, while potentially helping with constipation.

  • Can Affect Dental Health: The carbonic acid in seltzer can cause minor tooth enamel erosion over time, especially with frequent, prolonged sipping. Flavored versions with citric acid increase this risk.

  • Watch for Digestive Issues: The bubbles may cause bloating, gas, or exacerbate symptoms for individuals with sensitive gastrointestinal systems, IBS, or GERD.

  • Avoid Hidden Sugars: Not all seltzers are created equal. Always check labels for added sugars, artificial sweeteners, or other unwanted additives.

  • Moderation is Key: Experts suggest that enjoying 1-3 cans of plain seltzer per day is safe for most healthy individuals, but it should not be your only source of hydration.

In This Article

Seltzer's Health Benefits: More Than Just Bubbles

For many, seltzer water is a refreshing and zero-calorie alternative to sugary sodas. The key to its healthfulness, however, lies in its ingredients. When opting for plain, unsweetened seltzer, you are essentially drinking water infused with carbon dioxide (CO2), which offers several upsides.

Improved Hydration

Some people find the effervescence of seltzer more enjoyable than still water, which can encourage them to drink more and meet their daily hydration goals. Adequate hydration is crucial for a wide range of bodily functions, including regulating body temperature, keeping joints lubricated, preventing infections, and delivering nutrients to cells. For those struggling to consume enough fluids, swapping a sugary drink for seltzer is a significant step towards better hydration without unwanted calories.

Digestive Health Support

Research suggests that for some individuals, seltzer may aid digestion. The bubbles can encourage burping, which can relieve symptoms of indigestion or bloating by reducing pressure in the stomach. Studies have also indicated that carbonated water may improve swallowing ability and help relieve constipation in some people.

Potential for Weight Management

Staying hydrated is a cornerstone of weight management, and seltzer can play a role. The carbonation can promote feelings of fullness (satiety), which might help curb appetite and reduce overall calorie intake. By replacing high-calorie, sugary beverages with zero-calorie seltzer, individuals can significantly lower their intake of empty calories associated with weight gain and chronic health issues.

The Potential Downsides and Risks to Consider

While unsweetened seltzer is a far healthier choice than soda, it's not entirely without its potential drawbacks. These are largely related to the carbonation and potential additives in flavored varieties.

Dental Health Concerns

Carbonating water creates carbonic acid, a weak acid that lowers the water's pH. While significantly less acidic than soda or fruit juice, frequent consumption of seltzer can contribute to the erosion of tooth enamel over time, especially in individuals with pre-existing dental sensitivities. Flavored seltzers often contain additional acids, such as citric acid, which can further increase this risk.

To mitigate this risk, dentists recommend several strategies:

  • Drink seltzer in moderation and avoid prolonged sipping.
  • Use a straw to minimize contact with tooth enamel.
  • Drink seltzer with meals, as chewing stimulates saliva production, which helps neutralize acid.
  • Rinse your mouth with plain water after drinking seltzer.

Gastrointestinal Discomfort

The carbon dioxide responsible for seltzer's fizz can also cause digestive issues in some people. For those with sensitive stomachs, irritable bowel syndrome (IBS), or gastroesophageal reflux disease (GERD), the extra gas can lead to bloating, burping, and heartburn. If you notice increased discomfort, it's a sign to listen to your body and potentially scale back on your seltzer intake.

Hidden Additives

While many seltzer brands pride themselves on simple, clean ingredients, it's crucial to read the label. Some flavored varieties contain hidden sugars, artificial sweeteners, or other additives that diminish their health benefits. This is especially important for those managing weight or blood sugar levels, as these added ingredients can counteract the purpose of choosing seltzer in the first place.

Comparison Table: Seltzer vs. Other Beverages

Feature Plain Seltzer Water Sugary Soda Still Water Sparkling Mineral Water Club Soda
Calories Zero High (e.g., 140+ per 12oz) Zero Zero Zero
Sugar None High, added sugars None None None
Minerals None None Trace amounts (can vary) Natural, varying minerals Added minerals (e.g., sodium)
Dental Impact Low risk (slight acidity) High risk (high sugar + acidity) No risk Low risk (slight acidity) Low risk (slight acidity + added minerals)
Hydration Excellent Poor (can contain diuretics like caffeine) Excellent Excellent Excellent
Best For Hydration with fizz, mixers for low-calorie cocktails Occasional treat, high-sugar indulgence Optimal, everyday hydration Mineral replenishment, unique flavor Mixers needing a salty or extra-fizzy base

A Final Verdict on Seltzer

For the vast majority of healthy people, plain, unsweetened seltzer is a fantastic, hydrating beverage choice that serves as a much better alternative to sugary sodas. Its zero-calorie, zero-sugar profile helps with hydration and weight management, and it can offer digestive relief for some. However, awareness is key. Individuals with sensitive teeth or gastrointestinal issues should pay attention to their body's response and moderate their intake accordingly. Always read labels to avoid sneaky additives and sugars. By making mindful choices, you can fully enjoy the satisfying fizz of seltzer as a part of a healthy, balanced lifestyle.

Is Seltzer Healthy? Making Your Best Choice

Best seltzer for everyday drinking: A plain, unsweetened seltzer with a short, simple ingredients list (filtered water, carbon dioxide) is the healthiest choice for most people. Minimize dental risk: If you drink a lot of seltzer, use a straw and don't sip it over a long period. Consider drinking it with meals to stimulate saliva production. Listen to your gut: For those with IBS or GERD, the carbonation might cause bloating or heartburn. If you experience discomfort, try reducing your intake or sticking to still water. Choose wisely over soda: Seltzer is a significantly healthier alternative to soda, offering the satisfying fizz without the harmful sugar, calories, and artificial ingredients. Check for hidden ingredients: Don't assume all seltzers are the same. Read the nutrition label to ensure there are no added sugars or artificial sweeteners. Prioritize still water: While seltzer is a great choice, regular tap water often contains fluoride, which is vital for dental health. Make sure seltzer isn't your only source of daily hydration.

Frequently Asked Questions

Plain seltzer is slightly acidic due to carbonation, which can lead to minor enamel erosion over time. However, it's significantly less harmful than sugary sodas. To minimize risk, drink in moderation, use a straw, and rinse your mouth with plain water afterward.

For some individuals, the carbonation in seltzer can cause gas and bloating. People with sensitive digestive systems, IBS, or GERD may be more prone to these effects. If you notice discomfort, you might need to limit your intake.

Flavored seltzers are healthier than sugary sodas but require caution. Many use natural flavor essences with no calories, but some brands include added sugars or artificial sweeteners. Always read the label to confirm the ingredients.

Seltzer is plain water artificially carbonated with CO2. Sparkling mineral water comes from a natural spring, is often naturally carbonated, and contains dissolved minerals that affect its taste.

Yes, for most healthy people, drinking seltzer every day is perfectly safe, especially when it helps you meet your hydration goals. It's best to alternate with still water to ensure you get fluoride and to minimize potential dental risks.

Yes, seltzer is a better choice than most diet sodas. While diet sodas are calorie-free, they contain artificial sweeteners and other chemicals that seltzer lacks. For a clean, hydrating beverage, plain seltzer is the superior option.

Seltzer can support weight management by providing a zero-calorie, hydrating alternative to sugary drinks. Its carbonation can also help increase feelings of fullness, potentially reducing overall calorie intake.

References

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.