Honestly, seeing that humans 15,000 years ago, more or less, had holes in their teeth debunks the theory that candy is rotting our teeth; well, candy very well is rotting our teeth, but it isn’t the only culprit! Your everyday staples are causing your tooth to decay every single time they’re left on your tooth’s surface. Along with regular food, sugary drinks, snacks, and not cleaning your teeth properly are a disastrous combination. According to Mayo Clinic, tooth decay is the most common health issue that 7 billion people on this planet share. They’re more common in children than any other age group because they have, usually, not learned how to properly clean their teeth.