 The eating habits your mom taught you were wrong. Don't swallow your gum, it will take almost a decade to digest. False. While gum is indigestible, it actually passes through you if you happen to swallow it. And it takes about two hours. Carrots are eye-superfood. This myth originated from World War II propaganda when the British Royal Air Force claimed that carrots helped pilots see through the night, which turned out to be false. The carrot story was told to cover up new technology they used to detect objects from afar. The vitamin A and beta-carotene and carrots are good for your eyes, but they've been way overhyped. Sugar makes you hyper. Wrong. The idea of sugar causing you to bounce off the wall has been a myth for ages. Even though a 1994 study declared that to be false, however, consuming large quantities of sugar could lead to ADHD-related symptoms over time.