Of all the commonly consumed vegetables, carrots provide the highest amount of provitamin A carotenes. Carrots also offer an excellent source of fiber, vitamin K, and biotin. They are a good source of vitamins B6 and C, potassium, and thiamine.
Carrots contain a large amount of antioxidant compounds which help to protect against cardiovascular disease and cancer. The high intake of carotene has been linked with a 20 percent decrease inpostmenopausal breast cancer and up to a 50 percent decrease in the cancers of the cervix, bladder, colon, prostate, larynx, and esophagus. Extensive studies have shown that a diet that includes at least one carrot per day could cut the rate of lung cancer in half.
Carrots are also effective in promoting good vision, especially night vision. Beta-carotene provides protection against macular degeneration and the development of senile cataracts – which is the leading cause of blindness in the elderly.