Carbonated drinks are sweetened beverages with added carbon dioxide that make them bubbly. They often contain high amounts of sugar, especially fructose, which can lead to weight gain and liver problems when consumed in excess. Carbonated drinks also contain caffeine and artificial sweeteners like aspartame that have been linked to various health issues such as cancer, diabetes, bone loss, and tooth decay. While carbonated drinks provide no nutritional benefits, there are many healthier alternatives to choose from.