Foods that can lower blood sugar: 1. The diet of diabetic patients is bitter gourd, onion, pig pancreas, laver, auricularia auricula, garlic, yam, zucchini, bean sprouts and so on. It should be a balanced diet, that is, under the premise of controlling the total calories, the types of cereals, meat, eggs, milk, vegetables and fruits should be as complete as possible to obtain balanced nutrition. It is recommended to eat vegetables with low glycemic index, such as cucumber and bean sprouts.