Nowadays, many fruits are eaten together with skin. Because the skin of some fruits is rich in nutrients, the skins of these six kinds of vegetables contain harmful substances, and even the skin can easily harm health.
1, sweet potato skin
Sweet potato grows underground for a long time, its epidermis is in direct contact with the soil, and many harmful materials are absorbed in the sweet potato skin. And sweet potato skin contains more alkali, eating too much can cause gastrointestinal discomfort. Some owners of roasted sweet potatoes use coke as fuel for frugal costs. The harmful substances such as sulfur dioxide are also easily deposited in sweet potato skins, and they are easily carcinogenic.
2, persimmon skin
Mature persimmon skin contains a lot of tannic acid, and this material will feel “snaky†when eaten. In the role of stomach acid, tannic acid will interact with the protein in foods to produce a natural sediment, namely persimmon stone. This kind of material can easily cause symptoms such as abdominal discomfort, fullness, and loss of appetite. Therefore, do not eat undisturbed persimmons, and do not eat persimmons on an empty stomach.
3, potato skin
Potatoes contain glycoalkaloids, which are almost entirely concentrated in potato skin. If consumed in large amounts, it can cause vomiting, dizziness, diarrhea and other symptoms. Some people like to boil beef with skinned potatoes, and even if the skinned potatoes are cooked, they still contain glycoalkaloids. Even if cooked and peeled, poisonous substances can infiltrate the potatoes and cause food poisoning.
4, suede
Due to the fact that the living environment of the earthworm is mainly water, it will accumulate toxic and toxic excrement and chemical substances. If this food is eaten, it will cause various harmful substances in the earthworm to enter the body and endanger the health of the body. In addition, there are many different types of parasites in the cockroach. If they are eaten directly without washing the skin, they will cause a variety of gastrointestinal diseases.
5, ginkgo skin
Ginkgo biloba contains poisonous substances such as "gluconic acid", "hydrogenated ginkgoic acid", "hydrogenated ginkgo citric acid" and "glycol". When entering the human body, it can damage the central nervous system and cause poisoning. In addition, cooked ginkgo meat should not eat too much.
6, bright fruit skin
All brightly colored skins should be eaten after being peeled because their skins are rich in “flavonoidsâ€. This chemical substance enters the human body and is degraded by the bacteria of the intestine to become dihydroxybenzoic acid and so on. It has a strong inhibitory effect on the thyroid gland and may cause thyroid edema in a certain degree.
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