as a kid you were always told never to swallow gum because it would take 7 years to digest but this isn't actually true see when you swallow gum it travels down your esophagus and reaches your stomach inside acids and enzymes work to break down parts of the gum like flavorings or sweeteners however the actual base of the gum can't be digested so instead it travels through your intestines your body then treats it like any other waste and in a day or two it leaves your body when you poop