The “world’s deadliest food” is cassava
That dramatic headline refers to cassava (also called yuca or manioc), a starchy root eaten by hundreds of millions of people, particularly in Africa, Asia, and Latin America. The estimate of roughly 500 million consumers is widely cited.
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Live Science
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Why can cassava be deadly?
Cassava naturally contains cyanogenic glycosides, especially a compound called linamarin. When cassava tissue is damaged or digested, these compounds can release hydrogen cyanide.
If cassava is raw or inadequately processed, enough cyanide can accumulate to cause poisoning. Severe poisoning can lead to vomiting, dizziness, breathing difficulties, seizures, loss of consciousness, and death.
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Live Science
There is also a neurological condition called konzo, associated with prolonged cyanide exposure from inadequately processed cassava, particularly in vulnerable populations.
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Live Science
So why do 500 million people eat it?
Because properly processed cassava can be a safe and valuable staple food. Traditional processing methods—including peeling, soaking/fermenting, drying, and thorough cooking—are used to reduce the cyanogenic compounds.
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bestfolkmedicine.com
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Cassava is also extremely useful as a food crop because it tolerates drought and relatively poor soils and provides a major source of carbohydrates. FAO material has described it as providing food, income, and employment for roughly 500 million people.
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FAOHome
One important correction to the headline
The “200 deaths per year” figure is an estimate, not evidence that cassava is inherently lethal. The World Health Organization is cited as estimating more than 200 deaths annually from cassava poisoning, while many more people consume properly prepared cassava without problems.
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Live Science
So the more accurate takeaway is:
Cassava isn’t a deadly food when properly processed; improperly prepared cassava can cause potentially fatal cyanide poisoning.
And this is why calling it “the world’s deadliest food” is more of a sensational nickname than a scientific classification.
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