What is a "red vegetable"?

[Red vegetables]: tomatoes, red peppers, carrots, etc. can improve people's appetite and nervous system excitement. Red food contains carotene and other red pigments together, which can increase the vitality of cells in the body's resistance tissues. In addition, the carotene contained in carrots can be converted into vitamin A in the body, playing the role of protecting human epithelial tissues such as respiratory mucosa. Eating it regularly can also enhance the ability of the human body to resist colds.