Diet soda has always branded itself as a healthier alternative to the regular stuff. It usually contains less sugar and makes you feel guilt-free for consuming. Pretty soon, you find yourself drinking it every day, typically with your lunch. You’ve become so comfortable with it that you can’t see why you’d ever need to change.
That is, until you visit your dentist for your regular checkup. After a few minutes into your examination, your dentist asks you “Have you been eating more sugar lately?” At this point you’re confused. By drinking diet soda, you’re drinking less sugar by definition. How could you still have cavities?