What health problems are caused by drinking a lot of Mountain Dew?

Lots of caffeine ! This is for sodas in general: Regularly drinking soda has been linked to Non-Alcoholic Fatty Liver Disease, Diabetes, heart disease & metabolic syndrome. Other possible risks include: increased weight, decreased bone mineral density (BMD) obesity, erosion of tooth enamel, mineral depletion & dehydration. If it contains artificial sweeteners & is used daily, this is linked to a 3 fold ^ in .