One: Do not eat fresh daylilies raw. Fresh daylilies contain colchicine, which is converted into a highly toxic substance, colchicine oxide, in the human body. As little as 3-20 milligrams can be fatal.
Two: Do not eat raw water chestnuts. Eating raw water chestnuts can lead to the ingestion of Fasciolopsis buski, which attaches to the intestinal mucosa, potentially causing intestinal ulcers, diarrhea, or facial edema.
Three: Do not eat raw sugar. Mites are often found in sugar, and eating raw sugar can easily lead to acariasis. Mites are tiny, hairy insects invisible to the naked eye that reproduce quickly in sugar. If ingested, they can cause abdominal pain, diarrhea, and ulcers. If they enter the lungs, they can cause hemoptysis and asthma. If they enter the urinary tract, they can cause urinary tract inflammation. Therefore, sugar should not be eaten raw and should be heated (to about 70°C for 3 minutes) before consumption.
Four: Do not eat raw honey. Bees often collect nectar from poisonous flowers, which can be processed into honey. Eating raw honey made from such flowers can lead to poisoning. Additionally, honey can easily be contaminated with bacteria during harvesting, transportation, and storage. Therefore, raw honey should not be consumed.
Five: Do not eat fresh wood ear mushrooms raw. Fresh wood ear mushrooms contain porphyrin-like photosensitive substances. Eating them raw can cause phytophotodermatitis, with severe cases leading to skin itching, edema, and pain.
Six: Do not drink raw soy milk. While soy milk is delicious and nutritious, drinking it unboiled can cause systemic poisoning. Raw soy milk contains harmful components such as trypsin inhibitors, phenolic compounds, and saponins. Trypsin inhibitors interfere with protein digestion and absorption; phenolic compounds give soy milk a bitter and beany taste; and saponins irritate the digestive tract, causing vomiting, nausea, and diarrhea, which can destroy red blood cells, produce toxins, and lead to systemic poisoning. [China Cuisine]
Seven: Do not eat river fish raw. The eggs of liver flukes develop into cercariae in snails in rivers and ponds and then parasitize in fish. Eating raw river fish allows these flukes to enter the human body, where they mature into adults, potentially causing cholangitis and even developing into cirrhosis.
Eight: Do not eat raw crabs and lobsters. Raw crabs carry metacercariae of lung flukes and Vibrio parahaemolyticus, while lobsters serve as intermediate hosts for lung flukes. Eating them raw allows lung flukes to enter the human body, causing lung damage. In severe cases, this can lead to intestinal inflammation or edema and congestion.
Nine: Do not eat raw eggs. The avidin in egg whites binds to biotin in the intestines, preventing the body from absorbing it. Raw eggs also often contain Salmonella, which can cause vomiting and diarrhea.
Ten: Do not eat raw beans. This category includes lentils, kidney beans, green beans, sword beans, and French beans. Beans can be toxic because they contain a poisonous protein called "lectin," which is most abundant in mature or older beans. Beans should be boiled or heated over high heat for at least 10 minutes to destroy this lectin. When stir-frying beans or using them as a filling, ensure they are thoroughly cooked. Even for cold bean salads, they should be boiled for 10 minutes.