A serving of carrots (one medium carrot or ½ cup chopped) will provide about:
210% of the average daily recommended amount of vitaminA
10% vitamin K
6% vitamin C...
The high vitamin A content, for which carrots are best known, comes from beta-carotene, which is converted into vitamin A in your liver. Interestingly, there's a reason why 'carrot' and 'carotene' sound so alike. The word carotene was devised in the early 19th century by a German scientist after he crystallized the compound from carrot roots.
Carrots also contain potassium, vitamin B6, copper, folic acid, thiamine and magnesium. I generally recommend eating carrots in moderation because they contain more sugar than any other vegetable aside from beets,
However, when eaten as part of an overall healthy diet, the nutrients in carrots may provide you with protection against heart disease and stroke while helping you to build strong bones and a healthy nervous system.