“Carrots improve your eyesight, especially night vision.”

The idea that eating carrots will dramatically improve your eyesight, particularly your ability to see in the dark, is a widely held belief with fascinating roots. While it's true that carrots are beneficial for eye health, the exaggerated notion of them granting superhuman night vision largely stems from a clever propaganda tactic employed during World War II.

During the Battle of Britain, the British Royal Air Force began using a then-secret radar technology to detect incoming German bombers. To divert attention from this groundbreaking innovation and protect their strategic advantage, the Ministry of Information launched a campaign attributing the RAF pilots' exceptional night-flying accuracy to their diet rich in carrots. This story was widely disseminated, featuring Squadron Leader John "Cat's Eyes" Cunningham, an actual night fighter ace, whose dietary habits were falsely credited for his success.

The campaign was incredibly effective, leading many to genuinely believe in the miraculous vision-enhancing properties of carrots. Scientifically, carrots are indeed packed with beta-carotene, which the body converts into vitamin A. Vitamin A is a crucial nutrient for maintaining healthy vision, and a severe deficiency can lead to xerophthalmia, a condition that includes night blindness. However, consuming carrots beyond what is needed to prevent a deficiency will not give you supernatural (Review) sight or correct existing vision impairments like nearsightedness or astigmatism.

People continue to believe this myth because of its plausible core – carrots are genuinely good for your eyes – combined with its historical reinforcement. While they won't turn you into a nocturnal predator, carrots certainly play an important role in supporting overall eye health as part of a balanced diet.