There are no special contraindications to eating walnuts, mainly allergies are prohibited, and infants should avoid eating them directly, so as not to accidentally enter the airway and suffocate. Walnuts are a relatively common food, rich in nutrients, such as protein, fat, various vitamins and minerals. 100 grams of walnuts contain 654 calories, of which 13.71 grams of carbohydrates, 15.23 grams of protein, 65.2 grams of fat, 98 milligrams of calcium, 2.91 milligrams of iron, vitamin C1.3 milligrams. The general population eat in moderation is beneficial to the body. Walnuts can be eaten in moderation by the general population, but allergy sufferers should be careful to avoid eating, so as to avoid allergic symptoms such as rashes, serious cases may occur asthma, anaphylactic shock and other serious consequences. Because walnuts are hard, infants generally try to avoid eating them directly, because their chewing function is not yet perfect, and it is easy to inhale the larger pieces of walnuts into the airway, resulting in choking and life-threatening. In addition, attention should also be paid to avoid eating too much at a time to avoid indigestion.