Potatoes are a grain and vegetable vegetable, scientifically known as potatoes, and together with rice, wheat, corn and sorghum are known as the top five crops in the world. In France, the potato is called the “underground apple. Potatoes have a full range of nutrients and are easily digested and absorbed by the body, enjoying the title of “second bread” in Europe and the United States. Potatoes are rich in vitamin A, vitamin C and minerals, twice as high quality as carrots, three times as high quality as cabbage and four times as high quality as tomatoes, with the highest vitamin C content of any vegetable. Experts have found that in the former Soviet Union, Bulgaria, Ecuador and other countries famous for longevity, people’s staple food is potatoes. A. Nutritional value The protein in potatoes is better than soybeans, the closest to animal protein. Potatoes are also rich in lysine and tryptophan, which is generally incomparable grain. Potatoes are also rich in potassium, zinc, iron food. The potassium it contains can prevent cerebral blood vessel rupture. It contains 10 times more protein and vitamin C than apples, and much more vitamin B1, B2, iron and phosphorus than apples. From a nutritional point of view, its nutritional value is equivalent to 3.5 times that of apples. Second, the efficacy of potatoes compared to rice, the calories produced are lower and contain only 0.1% fat. If you use it as a staple food and insist on having one meal a day with only potatoes, it will be very effective in losing excess fat. Eating an average of five to six potatoes a week can reduce the risk of stroke by 40 percent, and there are no side effects. In addition, potatoes are nutritious and are one of the anti-aging foods. When it comes to nutritious, anti-aging food, people easily think of ginseng, bird’s nest, royal jelly and other high-grade rare food, but rarely think of “popular goods” like potatoes. In fact, potatoes are rich in vitamins B1, B2, B6 and pantothenic acid and other B-complex vitamins and a large amount of high-quality fiber, but also contains trace elements, amino acids, protein, fat and high-quality starch and other nutritional elements. These components have an important role in the process of anti-aging and disease prevention in the human body. Third, who is not suitable to eat potatoes Potatoes contain alkaloids, the longer the potatoes are stored, the higher the alkaloid content. Excessive consumption of potatoes stored for a long time can affect the normal development of the fetus and lead to fetal malformations. Of course, people are very different and not everyone will have abnormalities after eating them, but it is better for pregnant women not to eat them. If the skin of potatoes turns green, it means that the content of the toxin lobotropin is high. It is important to eat potatoes with caution, not only to peel them, but also to cut away more of the flesh and remove the green part completely. If the green part of the potato skin is large or has sprouts, do not eat such potatoes, otherwise it is easy to food poisoning. People with itchy skin or congested eyes are not allowed to eat potatoes.