Cookie dough and other surprisingly dangerous foods (copy)
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Sushi
Sushi, poke and ceviche are usually enjoyed without any issues. However, as Western countries have become increasingly partial to raw fish dishes, there have been higher reports of sickness related to worm infections. The common culprit is anisakiasis (herring worm), which can cause severe abdominal pain and vomiting. In worst-case scenarios, patients will need to have the parasite removed surgically. To avoid this unlucky fate, do a little research into the restaurant you're heading to. Reputable sushi chefs are trained to flash freeze fish to kill parasites.
Raw sprouts
While raw fish and meats are known to carry bacteria, sprouts (including clover and mung bean sprouts) are an unsuspecting perpetrator. The innocuous vegetable in its various forms is grown in warm, humid conditions, ideal for bacteria to flourish. In 2011 bean sprouts grown in Germany and contaminated with E. coli were thought to have killed 29 people and caused serious illness in around 3,000 others. There have been numerous ‘sproutbreaks’ reported in the USA since the 1990s too. Only consume any kind of raw sprout labelled 'ready to eat' – all others should be cooked thoroughly. Children, elderly people and pregnant woman should avoid raw sprouts altogether.
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Rare beef
At the end of 2018, 12 million lbs of beef were recalled in the US due to an outbreak of salmonella, which caused 246 people to become sick in 25 states. Minced beef (ground beef) is particularly problematic as it often mixes meat from multiple cattle, and it only takes one piece of contaminated meat to affect the rest. The worst part? Contaminated beef usually looks and smells normal and many people eat their beef rare. To be on the safe side, cook hamburgers and minced beef dishes such as meatloaf to an internal temperature of 70°C (160°F), using a meat thermometer to check.
Pink pork
While many high-end restaurants and high-profile chefs advocate pork dishes where the meat is served pink, the NHS in the UK still recommends cooking pork all the way through. Raw pork can carry trichinosis, pork tapeworm and hepatitis E. Trichinosis causes stomach pain and vomiting, while the hepatitis E virus causes inflammation of the liver. To avoid getting ill from pork, make sure whole cuts are cooked to an internal temperature of 63°C (145°F) and minced pork to 71°C (160°F).
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Green potatoes
Potatoes which are left in the light can turn green (due to chlorophyll) and develop a build-up of a toxic alkaloid called solanine. While you may think it's harmless, eating green potatoes can cause you to become sick with diarrhoea, nausea, cramping, headaches, and very rarely, life-threatening consequences. To make sure you're in the clear, throw fully green potatoes out.
Oysters
From high-end seafood restaurants to street vendors, raw oysters are enjoyed around the world. But what’s equally prolific is the number of cases of infection by bacteria Vibrio species and others. In the US, it's thought 80,000 people get vibriosis annually and 100 people die from it every year. Some 80% of cases occur in summer when coastal waters are warmest. The symptoms of these infections include diarrhoea, cramping, nausea, vomiting, fever and chills. To greatly lower the risk of getting sick, only eat cooked oysters. Pregnant woman and those with weakened immune systems are warned to steer clear of shellfish altogether.
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Lunch meats
In 2018, 89,000 lbs of ready-to-eat ham were recalled by Johnston County Hams due to possible listeria contamination. Listeriosis is an unpleasant illness which causes fever, aches, stiffness, confusion, diarrhoea and convulsions. The problem happens when harmful bacteria find their way into processing factories and contaminate meats after it’s cooked but before it’s packaged. Stay safe by only consuming lunch meats from shops with good food safety standards and by storing shop-bought meats according to packet instructions.
Wild mushrooms
Foraging in the wild is fun and self-sufficient, however nature’s produce can be deadly. Poisonous mushrooms include the Death Cap, Fool’s Mushroom and Autumn Skullcap. The Death Cap is particularly insidious as it looks much like safe varieties, smells good and reportedly tastes delicious. However, it’s highly toxic and can cause death from kidney and liver failure. Take our advice and leave foraging to the experts.
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Bacon
In 2015 the World Health Organisation told us that processed meats are undeniably linked to cancer and that just 50g per day, the equivalent of two rashers of bacon, raises the risk by 18%. If you’re consuming more than that, the risk is said to be even higher. The estimates suggest 34,000 deaths worldwide from cancer a year could be down to diets high in processed meats, putting them in the same category as plutonium and alcohol. More recent studies concerning breast cancer have also corroborated this link. Enjoy bacon and processed meats in moderation.
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Chicken
Americans eat more chicken every year than any other meat, but it can be problematic. Raw chicken often carries salmonella and campylobacter, which can cause flu-like symptoms, nausea and vomiting. If handled and cooked properly it’s safe to eat, but cross-contamination sometimes happens at the factory, supermarket, restaurant or even in your own kitchen. The CDC in the US estimates that every year one million people get sick from eating poultry contaminated with harmful germs. To avoid food poisoning from chicken, cook it to an internal temperature of 73.9°C (165°F) and check it with a food thermometer.
Raw kidney beans
According to the US Food and Drug Administration (FDA) research, raw kidney beans contain a toxin called phytohaemagglutinin, also known as kidney bean lectin. It’s poisonous to humans and its purpose is probably to protect the plant from being eaten. One to three hours after consumption, you’ll feel severe stomach pains, nausea and vomiting. Symptoms pass fairly quickly, but some people are hospitalised and need intravenous fluids. Cooked beans also contain the toxin, but at harmless levels.
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Eggs
Whether you enjoy them fried, scrambled or poached, eggs are a highly nutritious breakfast or lunch. But they can also pose a health risk. Eggs can contain salmonella and if raw eggs are pooled together, the bacteria will spread. If contaminated eggs aren't cooked fully, for example in runny scrambled eggs, fried and poached eggs with runny yolks and Hollandaise sauce, you're highly likely to get sick. To be cautious, cook eggs properly and only consume Caesar salad dressing and raw egg dishes that contain pasteurised eggs.
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Tuna
Cooking seafood properly is no sure-fire way to avoid sickness. According to the FDA, tuna and other dark-meat fish release a toxin called scombrotoxin at temperatures above 15.5°C (60°F) which can’t be killed by cooking, canning or freezing. Symptoms of contamination can be similar to both food poisoning and an allergic reaction: tingling around the mouth, hives, a drop in blood pressure, dizziness and itchiness, followed by vomiting, diarrhoea, respiratory distress and heart palpitations. Only purchase fish from reputable retailers and keep it refrigerated.
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Romaine lettuce
Between 7 October and 4 December 2018, 62 people from 16 states and D.C were infected with E. coli O157:H7. The CDC cited romaine lettuce as the source of this nasty strain of the bacteria, which causes bloody diarrhea and vomiting. The original contamination was thought to be from animal waste in the soil. The CDC has announced it's safe to eat romaine lettuce again and is investigating how to prevent future outbreaks.
Rice
Rice is one of the world’s staple foods, however recent studies revealed it contains alarming levels of arsenic, a cancer-causing toxin, with effects that are ‘dose dependent’. Rice is grown in flooded conditions meaning arsenic from the soil is more easily absorbed. One to two portions of rice per week isn’t thought to be harmful to adults, but feeding young children too many rice products (like puffed cereal) can reportedly impact growth and development.
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Unpasteurized milk
Once compared to “playing Russian roulette”, drinking raw milk has become popular with organic food-lovers in recent years. The US government estimates that 3.2% of people drink it, but there has been a reported spike in raw-milk illness and two New Yorkers who consumed raw milk cheese died in 2017. Milk is pasteurized for a reason: to guarantee E. coli, salmonella, campylobacter and listeria are killed. Official advice is that raw milk should always be avoided. Certain unpasteurized cheeses can be safe, but should always be avoided by pregnant women and those with weakened immune systems.
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Agave syrup
The agave plant is native to South America and its sugars are used to make tequila and agave syrup. Agave syrup is a “naturally occurring sweetener” and low in glucose, so is sometimes thought of as nutritionally beneficial. However, it’s dangerously high in fructose and if consumed often, causes increased belly fat and fatty liver disease. Use agave syrup in low quantities, along with other sources of sugar such as granules, honey and syrup.
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Rhubarb leaves
Rhubarb leaves can cause nausea, burning sensations in the mouth and throat, and affect breathing. This is because they contain oxalic acid, which can form oxalate crystals in your kidneys. These can cause kidney failure and a build-up of waste products in the blood. Only consume rhubarb stems.
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Fruit stones
Chewing on a cherry, apricot or peach stone or the pips from an apple should be avoided, as they apparently contain a compound that turns into hydrogen cyanide in the body. The doses are small, so unless you consume a large amount the effects are unlikely to be fatal. Oh, and when you swallow a whole stone (although not easy, it can happen with cherries) it passes through your system still intact.
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Jelly sweets
Jelly sweets containing a thickening agent called konjac are banned in the European Union, Australia and numerous other countries, as their texture is thought to make them a choking hazard. The most commonly banned konjac-containing products are miniature jelly cups with peel-off lids. They’re branded “killer candies” and are reportedly responsible for 15 deaths worldwide.
Star fruit
Carambola, a bittersweet fruit commonly known as star fruit because of its distinctive shape, contains oxalic acid and caramboxin, which can worsen existing kidney troubles. According to the National Kidney Foundation in the USA, consumption of the fruit by those with kidney disease can result in confusion (caramboxin is a neurotoxin) or, in some cases, even death. Star fruit is safe for people with healthy kidneys to consume, however.
Raw cassava
Raw cassava, the root crop which becomes tapioca, contains a compound called linamarin which turns to cyanide when eaten raw. To make it safe to eat, it must be cooked in one of a number of ways: by boiling, grilling, or steaming, for instance. If cassava is not prepared correctly it can be dangerous to eat. Numerous deaths in Venezuela have been linked to cassava poisoning over the years.
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Casu marzu
Most of us love a good slice of cheese. But casu marzu is created by leaving Pecorino cheeses out for cheese flies, which lay their eggs inside the rind. Larvae hatch and begin to eat the cheese, softening it and breaking down the fats. They’re not removed before you eat the cheese either. Needless to say, it's considered a dangerous cheese to consume.
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Absinthe
Absinthe is an alcoholic drink made with woodworm (which contains thujone), sweet fennel and sweet anise. In the past it was thought to be a hallucinogenic, probably due to the fact thujone causes delirium and seizures in high doses. The concentration of thujone allowed in food and alcoholic beverages is now restricted by law in several countries. Nonetheless, as absinthe's alcohol percentage can be between 55% and 75%, it's always best to drink it with caution.
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Kinder Surprise
Don't worry, there aren't any dangerous ingredients in Kinder chocolate. The reason this popular sweet treat is banned in the US is because the toy inside the chocolate egg is considered dangerous. A non-edible object inside an edible one is classed as a choking hazard by the Food and Drug Administration (FDA).
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Raw honey
Most honey you buy in supermarkets has been pasteurized to kill bacteria, however it’s possible to get hold of raw honey taken directly from the beehive. The benefits of raw honey are that it contains more antioxidants, vitamins and minerals, but the downside is it can contain bacteria spores named Clostridium botulinum, which attack the nervous system, causing a condition called botulism. Raw honey should never be given to children and it's advised to always buy honey from a reputable store.
Bitter almonds
Bitter almonds are a variety of almond used to make almond extract and are highly poisonous when eaten raw. As little as four raw bitter almonds can make an adult light-headed, nauseous and suffer abdominal cramps. This is because they contain naturally occurring cyanide and eating enough can cause death. Bitter almonds are illegal to sell in the US, but they are legal in other countries so watch out when overseas.
Read more: 26 food mistakes that might poison you
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Cookie dough
It’s tempting to lick the spoon when making cookies and cake, but do not risk it. Despite being one of the nation’s best-loved foods, there are new warnings about the dangers following outbreaks of illness. Flour sometimes contains harmful bacteria and E. coli and raw eggs frequently carry salmonella. Only cooked dough or cookie dough ice cream sold in stores which has been treated, is safe.
Read more: 60 food hacks that are borderline genius