
As a child, my parents were always convincing me that carrots were the secret to maintaining good eyesight and preventing the need for glasses down the road. But when I got my first pair of glasses in fourth grade, they stopped using that line and instead served carrots with ranch dressing and buffalo wings. My mom, not exactly known for her scientific approach to parenting, had me wondering whether there was any truth to the claim about carrots and vision.
It turns out, Mom was just repeating a popular myth that actually started as wartime propaganda.
During World War II, German bombers regularly attacked Great Britain. In the early 1940s, the British set up radar stations along the southern coast to spot and intercept these bombers before they could hit land. To keep the Germans unaware of this radar system, British intelligence launched a campaign to highlight the extraordinary vision of the soldiers manning the defenses—including Flight Lieutenant John Cunningham, a RAF pilot known as "Cat's Eyes" for his ability to detect bombers in the darkest of nights.
The incredible vision of 'Cat's Eyes' was attributed to his carrot-filled diet. This myth spread to the Ministry of Food, which produced pamphlets about carrots and other root vegetables. These often featured a character named Dr. Carrot and carried the slogan, 'Carrots keep you healthy and help you see in the blackout.' The Germans, British citizens, and parents around the world embraced this story, repeating it for decades. This clever propaganda hid the true reason behind the RAF’s success—and also made kids more likely to eat their vegetables.
The British propaganda gave carrots more credit than they deserved. While they won't turn you into a second 'Cat's Eyes,' carrots do contribute to eye health because they're high in beta-carotene, a pigment that’s a precursor to vitamin A. A severe vitamin A deficiency can cause night blindness and other vision issues—especially in developing countries. However, in developed nations, most people get enough vitamin A from a balanced diet. So, unless there's a vitamin A deficiency, eating a lot of carrots won't improve your eyesight—but I’m sure my mom will skip this fact when trying to feed my nephew.
