What Are the Negative Effects of Mountain Dew?

The popular soda Mountain Dew may create a number of negative health effects, including the potential to generate allergic reactions and exposing people to citric acid and sodium benzoate. In addition to having high levels of citric acid and sodium benzoate, which may irritate the stomach and esophagus, Mountain Dew contains high fructose corn syrup, which scientific studies correlate with increased incidences of liver problems.