Sweet potatoes are also known as sweet potatoes, sweet potatoes, groundnuts and so on. The skin color is whitish or reddish, and the flesh is mostly yellowish-white, but also purple. In addition to food, it can also be used to make sugar, wine and alcohol. In Japan’s National Cancer Research Center recently announced the 20 kinds of anti-cancer vegetables “list”, sweet potatoes topped the list. Li Shizhen, a medical doctor in the Ming Dynasty, said: “The people in the sea have more life, and eat sweet potatoes, so also”. Eat more sweet potatoes in winter, good for the body, but eating sweet potatoes also have many taboos. Here we take a look at sweet potato and what health effects and how to eat healthy sweet potato. Sweet potatoes can prevent influenza The weather turns cold, the flu storm again. The U.S. media recently published an article pointing out that sweet potatoes help to fight against influenza, colds and flu. Sweet potatoes are the best food source of beta carotene, which helps the human body produce enough white blood cells to fight infections caused by the invasion of cold and flu viruses. Sweet potatoes can be eaten in a variety of ways, including steamed, baked, or pureed. Sweet potato soup can lose weight and slim down Coarse grains are rich in dietary fiber, which enters the intestines and cleanses the intestinal tubes, collecting toxins and wastes and allowing them to pass out of the body smoothly. Sweet potatoes are also rich in food fiber, while the content of vitamins is particularly high, which can create new cells in the intestines and promote metabolism. Weight loss sweet potato soup practice is very simple: sweet potato 1, peeled and shredded, onion 1/4, cut small pieces, kelp moderate amount, shredded, portobello mushroom shredded. Boil water in the pot, the sweet potato, onion, mushrooms, kelp into the soup boil, and then low heat Cook 10 minutes, add salt, chicken essence, sesame oil seasoning can be consumed. This soup can make the blood flow smoothly, the energy transported to the blood; and kelp can not only bring out the fresh flavor of the soup, but also to the body to replenish minerals. Sweet potatoes must be cooked before eating Sweet potatoes must be steamed and boiled before eating, because the starch granules in sweet potatoes are difficult to digest without high temperature destruction. Sweet potatoes contain a kind of oxidase, this enzyme is easy to produce a lot of carbon dioxide gas in the human gastrointestinal tract, such as sweet potatoes eat too much, will make people bloating, uh, fart. Eat sweet potato “heartburn” with a little pickle Sweet potato sugar content is high, eat more can stimulate a large amount of gastric acid secretion, make people feel “heartburn”. Therefore, it is best to eat sweet potatoes with a little pickle, can effectively inhibit stomach acid. Indigestion caution eating sweet potatoes sweet potato sugar, the body can not be absorbed, the remaining part of the intestinal tract to stay easy to fermentation, so that abdominal discomfort. Chinese medicine believes that wet obstruction of the spleen and stomach, stagnant food accumulation should be cautious of eating sweet potatoes. Sweet potatoes and persimmons should not be eaten together Sweet potatoes and persimmons should not be eaten at the same time in a short period of time, at least five hours apart. If eaten at the same time, the sugar in the sweet potato fermentation in the stomach, will increase the secretion of gastric acid, and persimmons in the tannin, pectin Reaction of precipitation cohesion, resulting in hard lumps, a large amount of serious gastrointestinal bleeding or cause gastric ulcers. If you feel upset stomach, you must go to the hospital to do gastroscopy to see if there is gastric bleeding or gastric ulcer. Sweet potatoes are best eaten for lunch Sweet potatoes lack protein and lipids, so they should be eaten with vegetables, fruits and protein foods so that there is no nutritional imbalance. Most importantly, sweet potatoes are best eaten at lunchtime. This is because after we eat sweet potatoes, the calcium contained in them needs to be absorbed in the body after 4 to 5 hours, and the sunlight in the afternoon can promote the absorption of calcium. If you eat sweet potatoes at lunchtime, all the calcium can be absorbed before dinner, and it will not affect the absorption of calcium in other foods at dinner. Why is the sweet potato placed for a long time sweeter than the newly dug sweet potato? One is that the sweet potato is placed for a long time, the water evaporation is reduced, the relative increase in the concentration of sugar in the sweet potato; the second is that in the process of placing, the water is involved in the hydrolysis of starch within the sweet potato, starch hydrolysis into sugar, which makes the sugar in the sweet potato increase up. Therefore, we feel that the sweet potato placed for a long time is sweeter than the newly dug out of the earth.