Every year, more than 200 people lose their lives after eating what many experts have labeled  “the world’s deadliest food.” What makes this even more shocking is that this food is not rare, expensive, or difficult to find. In fact, it is a daily staple for millions of families. Despite the danger,  nearly 500 million people still eat it regularly, especially in parts of Africa, Asia, and Latin America.

So, what is this deadly food?

The World’s Deadliest Food: Cassava

The answer is cassava—a starchy root vegetable that looks harmless and is widely used to make flour, bread, chips, and porridge. Cassava is popular because it is cheap, filling, and can grow in harsh climates where other crops struggle. It survives droughts, poor soil, and long dry seasons, making it a lifeline for communities facing hunger and poverty.

But cassava comes with a terrifying secret: if it is not prepared correctly, it can release deadly poison.

Why Cassava Can Be Deadly

Cassava naturally contains compounds called cyanogenic glycosides, which can produce hydrogen cyanide—a toxic chemical also known as cyanide. Cyanide attacks the body quickly by preventing cells from using oxygen properly.

When cassava is eaten raw, undercooked, or processed incorrectly, a person can suffer from cyanide poisoning. This can lead to severe illness and, in extreme cases, death within hours.

Common Symptoms of Cassava Poisoning

People who ingest dangerous levels of cyanide from cassava may experience:

• Dizziness and weakness

• Headaches and confusion

• Vomiting and stomach pain

• Difficulty breathing

• Rapid heartbeat

• Seizures

• Loss of consciousness

In serious cases, the result can be sudden death—especially for children, elderly people, and those who are already malnourished.

Why So Many People Still Eat It

With such risks, many people wonder: Why would anyone keep eating cassava?

The truth is, for millions, there is no other option.

1. It Prevents Starvation

Cassava is one of the most important crops in the world because it can produce a large amount of food from a small farm. In areas suffering from food shortages, cassava may be the only reliable source of calories.

2. It’s Cheap and Accessible

In many rural communities, cassava is easier to grow and harvest than grains like wheat or rice. Families can plant it once and harvest it over time as needed.