Low-calorie food mainly refers to food containing less starch, sugar and other carbohydrates, mainly including vegetables and fruits. 1. Vegetables: Vegetables are rich in vitamins and minerals and contain less carbohydrates, for example, the calorie content of bamboo shoots is 19 kcal per 100 grams of edible parts, 18 kcal per 100 grams of mung bean sprouts, and the calorie content of cucumbers and tomatoes is 15 kcal per 100 grams of edible parts and 19 kcal per 100 grams of edible parts, which is a low-calorie food. 2. Fruits: the calories of fruits come from the sugar in the fruits, the more sugar, the higher the calories, low calorie fruits are lemon (24 kcal per 100 grams of calories), grapefruit (28 kcal per 100 grams of calories), pineapple (32 kcal per 100 grams of calories) and so on. The amount of heat produced by food depends not only on the food itself, but also on the way it is cooked. Generally speaking, cold, boiled and steamed food has a low calorie content, while food cooked, fried and deep-fried has a high calorie content, so if you want to maintain a low-calorie diet, you have to avoid overcooking.