Kale as a food, there is no specific drug efficacy and effect, there is no special contraindication, as long as no allergies can be consumed. Kale, belonging to the cruciferous plants, as a food, there is no specific drug efficacy, every 100 grams of kale contains 22 calories, of which 2.2 grams of protein, 4.33 grams of carbohydrates, 0.13 grams of fat, sodium 226 milligrams, vitamin A575IU, vitamin C30 milligrams, 117 milligrams of calcium, iron 2.57 milligrams. However, kale is rich in vitamin C, vitamin A, as well as calcium and other nutrients, moderate consumption can help replenish the body’s nutrients needed to provide energy for the body. There are many rumors circulating in the society that eating kale can cure or prevent certain diseases, but in fact these rumors have no scientific basis. Kale is a kind of food, and food does not have the efficacy and function of preventing or treating diseases, the biggest role of food is to supplement nutrients for the body and provide energy. As a food, kale has no relative contraindications, as long as the patient is not allergic to kale can be consumed.