Carbonated water, also known as soda water, is created by infusing water with carbon dioxide gas under pressure. This process triggers a chemical reaction that produces carbonic acid, a mild acid that activates the same taste receptors in the mouth as mustard. While some individuals find this sensation enjoyable, others may find it bothersome.
The acidity of soda water typically falls within the range of 3-4 on the pH scale, indicating a slightly acidic nature. However, consuming soda water does not alter the acidity levels of our body's cells. Excess carbon dioxide is eliminated by our kidneys and lungs to maintain blood pH levels between 7.35-7.45.
Carbonated water has the potential to positively affect digestion in multiple ways:
Enhancing swallowing ability: Research indicates that consuming carbonated water can enhance the ability to swallow among both adults and younger individuals. A study involving 72 participants demonstrated that drinking cold carbonated water helped improve throat clearance sensation in 63% of cases when there was a need to do so. It is noteworthy that those who experienced the greatest relief were individuals with more severe symptoms.
Prolonging satiety: Carbonated water has been found to prolong the feeling of fullness compared to regular still water. One study discovered that it aids in food retention within the stomach, while another study observed increased levels of satiety among participants who consumed 250 ml of carbonated water after a meal instead of plain still water.
Preventing constipation: In a two-week experiment involving 40 adults who had previously suffered from a stroke, the consumption of soda water was found to nearly double bowel movements when compared to plain water. Additionally, participants reported a significant 58% reduction in symptoms related to constipation. Furthermore, there is evidence suggesting that soda water aids in preventing stomach discomfort. For instance, a 15-day study conducted on 21 individuals with chronic digestive issues demonstrated that those who consumed soda water experienced an improvement in their symptoms, including relief from constipation.
Some studies suggest that carbonated water might have a positive impact on heart health, although the available evidence is quite limited. A study involving 18 menopausal women found that consuming sodium-rich carbonated water resulted in a decrease in levels of LDL cholesterol and blood sugar, as well as an increase in levels of HDL cholesterol. Researchers estimate that individuals who regularly consume carbonated water may have a 35% lower risk of developing heart failure within a decade compared to those who do not. However, it is important to note that this study was conducted on a small scale and further investigation is needed to fully understand the potential benefits.