According to experts, sweet potato not only has balanced nutrition, but also has the little-known functions of preventing sub-health, losing weight, bodybuilding and anti-cancer.
Sweet potato, also known as sweet potato, sweet potato, sweet potato, sweet potato, sweet potato, etc., is an annual plant of convolvulaceae, and is a kind of healthy food for both medicine and food. Sweet potato contains dietary fiber, carotene, vitamins A, B, C, E, potassium, iron, copper, selenium, calcium and other trace elements 10, which has high nutritional value and is called the most balanced health food by nutritionists. Many girls who love beauty feel that sweet potatoes are very sweet, and they are afraid that if they eat too much, they will get fat. Professor Zhang Hude from the Health Room of Beijing University of Chinese Medicine said that eating sweet potatoes not only won't make you fat, on the contrary, it can help you lose weight, keep fit, prevent sub-health, relieve constipation and detoxify. Every100g of fresh sweet potato contains only 0.2g of fat, which generates 99 kilocalories of heat energy, which is about 0//3 of rice/kloc-0. It is a good food with low fat and low heat energy, and at the same time, it can effectively prevent sugar from changing into fat, which is beneficial to weight loss and bodybuilding. Sweet potato contains a lot of dietary fiber, which can not be digested and absorbed in the intestine. It can stimulate the intestine, enhance peristalsis, relieve constipation and detoxify, especially for senile constipation.
Professor Zhang particularly emphasized that sweet potato is an alkaline food, and like many fruits and green vegetables, it is the most rare. The general food is acidic, such as grain, chicken, duck, fish and so on, and the PH value of human body is 7.34, so eating sweet potato is beneficial to the acid-base balance of human body. Eating sweet potatoes at the same time can reduce blood cholesterol and prevent "modern diseases" such as sub-health and cardiovascular and cerebrovascular diseases.
Professor Lin Hongsheng, director of the Oncology Department of Guang 'anmen Hospital of China Academy of Traditional Chinese Medicine and deputy director of the National Cancer Medical Center of Traditional Chinese Medicine, told the reporter that sweet potato is not only nutritious, but also ranks first in anti-cancer food. There are many introductions in this literature. The list of 20 kinds of anticancer vegetables published by the National Cancer Research Center of Japan is: sweet potato, asparagus, cauliflower, cabbage, broccoli, celery, sweet pepper, carrot, cauliflower, amaranth, shepherd's purse, kohlrabi, mustard tuber, tomato, green onion, garlic, cucumber, Chinese cabbage, etc. Among them, sweet potato ranks first. Moreover, Japanese doctors found that the cancer inhibition rate of cooked sweet potatoes was higher than that of raw sweet potatoes through a dietary survey of 260,000 people. Chinese medical workers have investigated the hometown of centenarians in western Guangxi, and found that the long-lived elderly here have the same characteristics, that is, they are used to eating sweet potatoes every day, and even use them as staple food.
The anti-cancer mechanism of sweet potato is not very clear, and there are many opinions. As reported, the hospital in Philadelphia, USA, extracted an active substance-androsterone from sweet potato, which can effectively inhibit the occurrence of colon cancer and breast cancer. Another American university study found that there is a substance called dehydroepiandrosterone in sweet potatoes, which has a definite effect on the prevention and treatment of cancer. Professor Zhang Hude from the Health Room of Beijing University of Chinese Medicine believes that sweet potato has a certain anti-cancer effect, but its anti-cancer "ability" should not be exaggerated, and it should be treated dialectically, because its mechanism is not completely clear, and the greatest effect of sweet potato should be placed on losing weight, bodybuilding, preventing sub-health, relaxing bowels and detoxifying. Regarding the anti-cancer effect, Chinese medicine theory believes that it can reduce the accumulation of garbage and toxins in the human body because of its catharsis and detoxification.
In this regard, Professor Song Santai, director of the Cancer Center of China Academy of Military Medical Sciences and deputy director of the Cancer Committee of the whole army, also believes that no scientific experiments have been done on the mechanism and causes of anticancer of sweet potato. Theoretically, it is speculated that it is rich in dietary fiber, which can relieve constipation, and is beneficial to prevent cancers such as colon cancer.
Eating sweet potatoes correctly is also particular. First, we must pay attention to steaming and cooking thoroughly. Because the cell membrane of starch in sweet potato is not destroyed by high temperature, it is difficult to digest. Furthermore, the gasification enzyme in sweet potato will not be destroyed by high temperature, and it will cause discomfort after eating. Second, it should be noted that excessive or unreasonable consumption of sweet potato will cause abdominal distension, heartburn, pantothenic acid, stomachache and so on. Therefore, it is not appropriate to eat too much, and those who suffer from dampness blocking the spleen and stomach and qi stagnation in TCM diagnosis should eat carefully.
The disadvantage of sweet potato is the lack of protein and lipid, but today people are rich and no longer take sweet potato as the staple food, and its lack of nutrients can be supplemented by other diets. For example, eat milk and sweet potatoes at the same time, because milk is rich in protein and fat.