‘World’s deadliest food’ kills more than 200 people per year and is still eaten by 500 million

One of the deadliest foods in the world is eaten by half a billion people, and its widespread popularity may account for it having a deadly reputation if not prepared right.

When we say it's the 'world's deadliest food' we really do mean food, as there are many other deadlier things you could be eating which would not form part of your diet.

There are many things in this world you can eat which would kill you very quickly, but those tend not to be regular fixtures on the dinner plate.

Not many things that turn up on our dinner plates can kill us, but you'd be surprised how many people eat what is considered to be one of the 'world's deadliest foods' (Getty Stock Image)

However, something called cassava is a staple food which 500 million people eat and hundreds of millions of tonnes of it are produced for eating every year.

It's a plant that flourishes in tropical climates which is native to South America, though the world's top producer these days is Nigeria.

Cassava is a popular food and part of the staple diet of half a billion people, but the roots, peel and leaves of the plant are dangerous to eat raw because they contain toxic substances which can produce hydrogen cyanide.

Sweeter versions of cassava can contain as low as 20mg of cyanide per kilogram, but among the bitterest strains that figure can increase to 1,000mg of cyanide.

Cassava is a staple food for 500 million people, but parts of the plant are toxic (Emmanuel Osodi/Anadolu via Getty Images)

The World Health Organisation estimates that cassava poisoning kills about 200 people a year, so while it may be along the 'world's deadliest' foods, the number of people who eat it regularly and are fine is very high indeed.

That's because human beings are pretty clever, if we're allowed to pat ourselves on the back a bit here, and have learned how to prepare certain foods that would otherwise pose a health risk to us.

There are chefs who train to prepare an incredibly poisonous fish that would make for a deadly delicacy if not prepared by expert hands and we've learned how to lower the risk of being killed by cassava.

Eating parts of cassava raw or not processing them properly can cause death, and has been linked to the neurological disorder ataxia as well, so there are health impacts from this food apart from death.

When prepared properly it's a staple food for hundreds of millions of people, but it can expose people to hydrogen cyanide if things go wrong (Maskur Has/SOPA Images/LightRocket via Getty Images)

Preparing the food properly, which can involve soaking the plant for up to 24 hours, is a key part of making cassava as safe as possible.

The danger posed by cassava seems to increase during times when food is scarce, as during famines and food shortages people may eat more of the bitter cassava which is more likely to contain higher amounts of hydrogen cyanide.

During food shortages in Venezuela in 2017, El Pais reported that people were dying because they were eating the bitter food to stave off starvation.