Drinking plain soda generally does not cause an increase in blood sugar, but drinking commercially available soda drinks may cause an increase in blood sugar. Pure soda is a drink made by saturating drinking water directly with carbon dioxide. Soda made in this case has a very low calorie content and generally does not cause an increase in blood glucose. However, commercially available soda drinks may contain a large amount of sugar and additives, which may cause an increase in blood sugar when consumed. It is important to note that if you drink too much soda, a large amount of carbon dioxide will be produced in the stomach, leading to bloating and other discomforts, so it is important to drink soda in moderation. Patients who need to control their blood sugar should maintain a good lifestyle and diet, and exercise moderately, applying hypoglycemic drugs under the guidance of a doctor when necessary.