Sweet potatoes contain low calories and are quite filling. Whether used as staple food or non-staple food, they are a good weight loss food.

According to measurements, every 100 grams of sweet potato contains only 0.2 grams of fat, which is 0.4% of that of rice. Therefore, sweet potatoes are among the best low-calorie and low-fat foods. In addition, sweet potatoes also contain balanced nutrients. Such as vitamins A, B, C, cellulose, and more than 10 trace elements such as potassium, iron, and copper. Among them, cellulose has a good stimulating effect on intestinal peristalsis and promotes smooth excretion.

At the same time, because the fiber structure cannot be absorbed in the intestine, it has the special function of preventing sugar from turning into fat. Therefore, nutritionists call sweet potatoes the most nutritionally balanced health food and the most ideal and inexpensive weight loss food.

Precisely because sweet potatoes are cheap and effective "good medicine" for weight loss, sweet potatoes have become very popular abroad in recent years. Nowadays, the Japanese regard roasted sweet potatoes as a "delicious and healthy food", and roasted sweet potatoes are even sold in big hotels in Tokyo and Osaka. Europeans and Americans have also designed ice cream, snacks, candies, etc. made from sweet potatoes. In some restaurants, you can eat bread for free, but you have to pay extra for sweet potatoes.

Sweet potato is sweet in taste and mild in nature. It is a cheap and high-quality health food. "Compendium of Materia Medica" records that "white potato... supplements food and makes people live longer. It has the functions of replenishing deficiency, replenishing qi and strength, strengthening the spleen and stomach, and strengthening the kidneys." Yin" and other effects.

Sweet potatoes are one of the most nutritionally balanced foods. 500 grams of sweet potatoes can produce 630 kilocalories, contain more protein than rice, white flour and millet, and also contain calcium, phosphorus, iron, carrots and vitamins. Especially valuable are iron, calcium, carrots and vitamin C that are lacking in flour, but sweet potatoes are rich in them. The vitamin C in sweet potatoes is comparable to that of citrus, and the vitamin B is 7 times that of rice.

Sweet potatoes have a significant inhibitory effect on malignant tumors. According to the 20 vegetables released by the Japan Cancer Institute, sweet potatoes rank first. At the same time, it has the effect of maintaining the elasticity of blood vessel walls; preventing the atrophy of connective tissue of organs; improving the body's immune ability; preventing constipation; preventing coronary heart disease; prolonging aging; and prolonging life.