Koi Pla, a popular traditional dish consumed in Thailand and Laos is said to be responsible for the deaths of around 20,000 people every year.

Considered a salad by the Lao people of Laos and Thailand’s Isaan region, Koi Pla consists of minced raw fish, lemon juice, herbs, and spices. As you might have guessed, the fish is the problematic ingredient in this dish, although technically, it’s the parasites living in the fish. Koi Pla is most commonly made with raw freshwater fish from the Mekong basin which are often infested with parasitic flatworms known as live flukes. These parasites have long been known to cause one of the most aggressive types of cancer known to man, cholangiocarcinoma, or bile duct cancer, which causes the deaths of around 20,000 people in Thailand alone.

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Gyromitra esculenta, or the False Morel, is a Spring mushroom that contains the toxin and carcinogen gyromitrin, which makes it illegal to sell and cook in countries around the world. In Finland, however, it is considered a delicacy.

False Morel mushrooms have historically been consumed in northern Europe for centuries, but as chemistry and medicine evolved, it became somewhat of a forbidden fruit due to the dangers of consuming even small amounts of gyromitrin. Symptoms associated with the ingestion of this known toxin and carcinogen include severe headaches, vomiting, nausea, extreme dizziness, diarrhea and, if the damage to the liver is too serious, even death. Their sale in countries like Sweden and Norway was made illegal years ago, but in Finland people still eat it with gusto.

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