Urban Legend: Eating carrots results in improved vision
Status: False (I love this legend, btw)
Carrots have long been touted for their efficacy in improving eyesight, and generations of kids have been admonished to not leave them on their plates lest they end up needing glasses. But are carrots the sight-boosters popular wisdom asserts them to be? And if not, where did this belief begin?
While carrots are a good source of vitamin A (which is important for healthy eyesight, skin, growth, and resisting infection), eating them won’t improve vision. The purported link between carrots and markedly acute vision is a matter of lore, not of science. And it’s lore of the deliberately manufactured type.
In World War II, Britain’s air ministry spread the word that a diet of these vegetables helped pilots see Nazi bombers attacking at night. That was a lie intended to cover the real matter of what was underpinning the Royal Air Force’s successes: Airborne Interception Radar, also known as AI. The secret new system pinpointed some enemy bombers before they reached the English Channel. Urban Legends Reference Pages: Food (Carrots)