What is Mountain Dew and why is it so popular?

Fans like Whitley keep the sugary, caffeine-heavy soda Mountain Dew popular, even as Americans increasingly yearn for the healthy, natural food that is seemingly its opposite. U.S. soda sales have taken a dive in recent years. read more

And though Mountain Dew is kind of a niche drink -- about 20 percent of its users are responsible for 70 percent of its volume -- it’s the third most popular"liquid refreshment brand," behind only Coke and Pepsi, Beverage Digest found. read more

Mountain Dew fans, says Yohn, couldn't care less about all of that. A 20-ounce bottle of Mountain Dew has 290 calories, 77 grams of sugar and 91 milligrams of caffeine. By comparison, a 20-ounce bottle of Pepsi has 250 calories, 69 grams of sugar and 63 milligrams of caffeine. read more