One hundred percent of the calories in regular soda come from sugar or high-fructose corn syrup — that’s why I call it “liquid candy.” In fact, these empty liquid calories are largely responsible for fueling our nation’s obesity epidemic. Drinking soda also damages your teeth and promotes cavity formation — and some studies show cola may weaken your bones. Instead of guzzling soft drinks to quench your thirst, try good old-fashioned water or naturally flavored seltzers (which have the same bubbly pop as soda!).