You must have heard that fruit and vegetable peels are rich in nutrients and active ingredients, so you should eat them with the skin on for the body to fully absorb them. This way of eating seems to consume the "full nutrition" of the food, but some "unstable elements" may also be mixed in and eaten along with it.
1, Potato
Classic dishes like beef stew with potatoes and Di San Xian are common on people's dining tables. Many people boil potatoes with the skin on, thinking that high temperatures solve all the problems. This is not the case. Potatoes contain a substance called "solanine" to resist pests and diseases. The potato peel has a higher content of solanine, and when it accumulates to a certain amount in the body, it can cause poisoning. Especially potatoes with green skin or sprouts have an even higher content of solanine, and excessive consumption can cause a series of gastrointestinal reactions such as nausea and vomiting. Therefore, potatoes must be peeled before cooking.
2, Sweet Potato
Sweet potatoes are nutritious, but they are alkaline foods. Eating too many can cause "heartburn," and the sweet potato peel contains more alkali. If you often eat sweet potatoes with the skin on, it can cause gastrointestinal discomfort. The skin of sweet potatoes that is brown or dark brown with spots may be infected with "black spot disease," and eating it may cause poisoning.
3, Water Chestnut
Water chestnuts are sweet, crisp, and refreshing, and are a favorite of many people. However, the skin of water chestnuts may contain parasites such as fasciolopsis buski. If you eat the skin of inadequately washed water chestnuts, it can also lead to diseases.
4, Ginkgo
Although ginkgo has many benefits, it is slightly toxic and should not be eaten in excess. Especially the peel contains toxic substances such as "ginkgolic acid," and excessive consumption can damage the central nervous system and cause poisoning. When eating, you must not only peel off the inner skin, but also avoid eating too much of the cooked ginkgo nut.
In addition, due to the large use of chemical fertilizers now, nitrate pollution in fruits and vegetables is serious. Therefore, it is recommended that you peel vegetables and fruits as much as possible. Especially for fruits and vegetables like apples, pears, and grapes that are cultivated for a longer time and have a better taste, their skins often have many residues of microorganisms, pesticides, etc. Therefore, there is no need to risk damaging your health for a little bit of nutrition.