25 Foods That Can Make You Sick or Kill You

Native to tropical West Africa, ackee was brought to Jamaica – where it is now considered the national fruit – by Captain William Bligh of “Mutiny on the Bounty” fame (its scientific name is Blighia sapida). When fully ripened and cooked properly, ackee is safe to eat – but the unripe fruit contains poisonous hypoglycin, which can cause convulsions and even death. Even if it’s cooked, unripe ackee can be deadly — as can the water it’s cooked in.

Yes, you can eat a barracuda – that is, if it doesn’t eat your first. In Florida, barracuda is a popular fish to catch and eat. Just be sure to cook up only the smaller fish; any one more than about three-and-a-half feet in length may contain a concentration of ciguatoxin, which can cause a wide variety of symptoms including numbness and nausea and can affect heart rhythm and body temperature.

Even watch cooking shows and wonder why the chef always takes the bay leaves out of the sauce or soup before serving? Although the essential oils in bay leaves add flavor and aren’t toxic to humans, their jagged edges that make them harmful to swallow.

An edible tuberous root, cassava is typically ground into flour. However, because it contains cyanogenic glucosides, cassava must be detoxified by soaking, drying, and scraping before being eaten to prevent potentially fatal cyanide poisoning.

Everybody loves cheese, right? But casu marzu may not be to everyone’s taste, except in Sardinia, where the locals love this cheese – once tagged the “world’s most dangerous” because it’s filled with live maggots, which digest the milk proteins turning the cheese creamy and soft. Unfortunately, ingesting any of the maggots could result in myiasis, tiny holes in the intestine caused by maggot bites..

It’s not the sweet flesh of the cherry that’s dangerous; it’s the hard pit that contains cyanide (also known as prussic acid). But don’t worry if you swallow a whole pit. The pit will pass through your digestive system harmlessly. On the other hand, don’t swallow broken up bits of the cherry pit; the cyanide can lead to unconsciousness and death.

One of the four types of cinnamon, the dark-colored cassia cinnamon is the one you’re most likely to buy in the U.S. Consuming large quantities of cassia cinnamon may be toxic if you have liver problems because some cinnamon products contain coumarin, a common ingredient in rat poison. The faddish “cinnamon challenge” that first became popular in the early years of this century – it involves eating a spoonful of ground cinnamon in less than a minute without washing it down – poses another problem: The powdered spice can cause choking or vomiting and damage the esophagus or lungs.

How can such an innocent looking fungus be so lethal? There are numerous toxic mushroom varieties, but the efficiency of the death-cap mushroom is so well-known that it’s been implicated in the deaths of such famous figures as the Roman emperor Claudius, Pope Clement VII, the Russian tsaritsa Natalia Naryshkina, and Holy Roman Emperor Charles V.

Touted for its medicinal purposes, the elderberry is packed with antioxidants and nutrients. However, the bark, leaves, seeds, and unripened berries of the plant contain cyanogenic glycosides, which can cause nausea, diarrhea, and overall weakness, among other problems.

Fugu, or blowfish, contains the poison tetrodotoxin in its inner organs. The poison paralyzes the victim until he or she can no longer breathe, and death may follow. The flesh of the fish is considered a great delicacy, however, and it is often served in high-end sushi bars. In Japan and a few other countries, only chefs with three or more years of training are legally permitted to prepare the fish.

As potatoes age, they develop a toxin called solanine, which turns them bitter and can lead to nausea and sometimes serious neurological problems. Other naturally occurring toxins in potatoes, called glycoalkaloids, grow strongest in the sprouts and eyes. Glycoalkaloids can be particularly problematic for infants and young children, but even in adults can cause acute gastrointestinal problems.

An Icelandic delicacy, hákarl is the meat of Greenland shark, traditionally prepared by burying it in sand to ferment for months, then air-drying it. The meat can be poisonous if eaten raw because the fish itself contains high quantities of urea and trimethylamine oxide (which can induce severe cardiovascular problems). Theoretically, the preparation process renders the shark harmless – but it acquires such a pungent ammoniated smell that non-Icelanders usually find it impossible to eat.

Hot dogs are packed with sodium (up to 600 grams in one dog) and contain potentially carcinogenic additives – but they are arguably most dangerous, especially for children, because their size and texture makes them a potential choking hazard.

Lychees are small tropical fruits found in Southeast Asia. Covered by a pinkish-colored skin, the lychee is peeled and its sweet, white flesh eaten. Consumed in small amounts, lychees are not harmful. However, the fruit has reportedly been the cause of brain inflammation cases in Southeast Asia. Scientists aren’t sure why that happens, but it may be due to the presence of the toxin hypoglycin A.

The American Academy of Pediatrics lists peanut butter as one of the most dangerous choking hazards for children. Although every kid loves it, the thick, sticky substance can be hard for very young children to swallow. Even adults are sometimes advised not to eat spoonfuls straight from the jar for similar reasons.

Peanuts are healthy, right? Unfortunately, a type of fungus known as aspergillus can cause peanuts to develop aflatoxins, which are carcinogenic in themselves, but are also the trigger for extremely serious allergic reactions, especially in children, leading to death if not treated immediately. .

Raw cashews contain urushiol, a substance found in poison ivy. But if you see “raw” cashews in the store, they’re safe to eat because the nuts have been steamed to remove the toxins. A small percentage of people, however, have a severe allergic reaction to the nuts, similar to that more commonly linked to peanuts and just as potentially dangerous.

Although safe for most adults, raw honey is especially dangerous to children under the age of one. The syrupy substance can contain spores of a bacterium that could cause botulism poisoning. Signs of an adverse reaction include nausea, vomiting, and diarrhea. Adults and older children can fight off the bacteria, but babies cannot. Compounds called pyrrolizidine alkaloids may cause symptoms of illness in some adults, as well, and a small segment of the population is allergic to bee pollen and may get sick from honey.

Rhubarb stalks are perfectly safe to eat, and their tart flavor often finds its way into pies and tarts, with or without strawberries, in the spring. The leaves, however, are another story: They’re inedible because of a high concentration of oxalic acid, which can cause diarrhea and vomiting and lead to more serious conditions.

Shaped like a star, the starfruit, or carambola, contains a high concentration of oxalate. Most people can consume it safely, but it could cause further damage to those with kidney disease, and may interfere with the absorption of some prescription medicines.

When cooked or dried, stinging nettles – popularly considered a springtime health food in some cultures – are generally considered safe. However, the leaves can cause an allergic reaction on the skin due to their content of formic acid and other substances, and the spines can cut the hands.

The Centers for Disease Control & Prevention estimates that about a million people get sick from eating contaminated poultry every year. Undercooked chicken may contain harmful bacteria, such as salmonella, which can be fatal. To prevent contamination or illness, cook chicken to an internal temperature of 165° F, wash your hands after preparing the meat, and clean any poultry juices from your utensils, plate, or cutting board.

Raw lima beans contain linamarin, which turns into cyanide when eaten. But when well-cooked lima beans pose no danger because the heat destroys the cyanide enzymes.

Phytohaemagglutinin is found in many raw beans, but its highest concentration comes in kidney beans. A good soak and thorough cooking will remove the toxin and prevent any gastrointestinal symptoms.

Whether from a cow, sheep, or goat, unpasteurized milk and other dairy products may be full of Listeria monocytogenes and other bacteria that can cause food poisoning. The heating process called pasteurization – after French chemist and microbiologist Louis Pasteur, who invented it in 1864 – kills the bacteria, making the treated milk safe.