Calories in Seltzer Water: Nutritional facts for Seltzer Water Types

One gallon (3,785g or 128 oz) of plain unflavored seltzer water contains 0 calories.

Two liters (2,000g or 67.6 oz) of plain seltzer water contains 0 calories.

One cup (237g or 8 oz) of plain seltzer water contains 0 calories. One cup (237g or 8 oz) of Spindrift Grapefruit Seltzer provides 11 calories because the liquid is infused with real squeezed fruit juice that contributes natural fruit sugars to the beverage.

Seltzer water provides some health benefits like maintaining systemic hydration and improving digestive efficiency due to its carbonation and purified water base. Frequently referred to by nicknames such as "fizzy water," "carbonated water," "the bubbles," or "sparkling water," this beverage is a staple for individuals seeking a healthy alternative to sugary soft drinks. A list of the health benefits of seltzer water are shown below.

• Promotes Efficient Systemic Hydration: Carbonated water is as effective as still water for meeting daily fluid requirements. A study by Maughan RJ, et al. (2016), "A randomized trial to assess the potential of different beverages to affect hydration status: development of a beverage hydration index," found that the hydration index of carbonated water is equivalent to plain still water.
• Alleviates Symptoms of Dyspepsia: The carbon dioxide bubbles in the water help move food through the digestive tract. Research by Cuomo R, et al. (2002), "Effects of carbonated water on functional dyspepsia and constipation," demonstrated that seltzer water significantly improves satiety and reduces constipation.
• Enhances Satiety for Weight Management: The ingestion of carbon dioxide gas increases the feeling of fullness in the stomach. This physical distention can help individuals reduce their total energy intake during meals by signaling fullness to the brain earlier.
• Improves Swallowing Reflex: Carbonation can stimulate the nerves responsible for swallowing more effectively than flat water. This benefit is utilized in clinical settings to assist individuals with certain types of swallowing disorders.
• Reduces Risk of Sugar-Related Diseases: Substituting soda with seltzer water prevents the intake of high fructose corn syrup and artificial dyes. This habit reduces the long-term risk of developing obesity, type 2 diabetes, and metabolic syndrome.
• Provides a Palatable Source of Fluid: The sensory experience of the carbonation makes it easier for individuals who dislike the taste of plain water to maintain adequate hydration levels throughout the day.

Seltzer water has been known to cause some unwanted effects like dental enamel softening and gastrointestinal bloating due to its acidic pH and dissolved carbon dioxide. This beverage, often nicknamed "gas water" or "fizzy seltzer," can cause issues if consumed in excessive quantities. A list of the downsides of seltzer water are shown below.

• Promotes Dental Enamel Erosion: The carbonation process creates carbonic acid, which lowers the pH of the mouth. A study by Jain P, et al. (2007), "The erosive potential of some beverages available in the UK," found that while seltzer is less harmful than soda, it is more erosive than still water.
• Induces Abdominal Bloating and Gas: The release of CO2 gas in the digestive tract can lead to air being trapped in the stomach and intestines. This result causes burping, flatulence, or physical discomfort in individuals with sensitive digestive systems or Irritable Bowel Syndrome (IBS).
• May Stimulate Hunger Hormones: Some research suggests that carbon dioxide can trigger the release of ghrelin, the hormone responsible for hunger. Research by Eweis M, et al. (2017), "Carbon dioxide in carbonated beverages induces ghrelin secretion and promotes weight gain in male rats," observed increased food intake in subjects consuming carbonated drinks compared to those drinking flat beverages.

Yes, seltzer water is good for you because it provides a zero-calorie, sugar-free method to stay hydrated without the artificial additives found in diet sodas. Healthy individuals should consume 1 L (33.8 oz) to 2 L (67.6 oz) per day as part of their total water intake to maintain cellular function. The major benefits include the support of digestive regularity and the prevention of dehydration-induced fatigue. It is an ideal beverage for maintaining a healthy diet and managing body weight effectively.

The calories in seltzer water change based on the addition of fruit juices, nutritive sweeteners, or alcohol. Standard unflavored and essence-flavored seltzers contain 0 calories per 100g (3.5 oz) because they consist only of water and carbon dioxide. When real fruit juice is added, such as in Spindrift Grapefruit, the count increases to 5 calories per 100g (3.5 oz), resulting in 17 calories per 355 mL (12 oz) can. Hard seltzers represent the most significant caloric increase, reaching 28 calories per 100g (3.5 oz) because they contain ethanol, which provides 7 calories per gram. Syphon-prepared bar seltzer maintains 0 calories as long as no flavored syrups are added during the carbonation process.

Seltzer water contains zero calories per 100g (3.5 oz) serving, whereas tonic water contains 34 calories per 100g (3.5 oz). Tonic water includes added sugar calories to balance the medicinal bitterness of quinine, leading to 130 calories in a standard 355 mL (12 oz) can. Seltzer water provides an energy-neutral hydration source without carbohydrates. The calorie difference comes from the high concentration of cane sugar or high fructose corn syrup used in tonic water, making seltzer a much lower-energy choice for daily consumption.

The origin of seltzer water is traced to the natural mineral springs of Selters, Germany, where the water was naturally carbonated by volcanic gases and possessed a high concentration of minerals. By the late 18th century, these "Selters Waters" were being bottled and exported across Europe for their perceived medicinal properties and unique crisp taste. The commercial evolution of the beverage accelerated in 1767 when the English chemist Joseph Priestley discovered a method to artificially infuse water with carbon dioxide by suspending a bowl of water over a beer vat at a local brewery.

In 1783, Johann Jacob Schweppe refined Priestley's methods to develop the first practical process for mass-producing bottled carbonated water in Geneva, Switzerland. This technological advancement allowed the beverage to transition from a localized European spring water to a global commodity. During the 19th and early 20th centuries, seltzer became a cultural staple in the Jewish communities of New York City, where "seltzer men" delivered heavy glass bottles of the pressurized liquid directly to households. Today, seltzer water is defined as purified water that is artificially carbonated without the addition of mineral salts, distinguishing it from club soda and natural mineral water in the modern international beverage market.