It is one of the world’s most important staple foods—and one of its most treacherous. Cassava, rich in vitamin C, copper, fiber, and energy-giving carbohydrates, anchors diets across tropical regions, from West Africa to Southeast Asia. Yet beneath its rough skin, natural cyanide compounds wait, harmless when properly removed, deadly when ignored. In desperate times, when famine, war, or poverty strip away fuel and time, people skip the careful soaking, sun-drying, fermenting, and boiling that make cassava safe.

That shortcut can cost everything. Chronic exposure has been tied to konzo, a devastating neurological disease marked by sudden, irreversible paralysis, often striking children and women first. The bitter irony is that the same root that sustains millions can quietly destroy nerves, steal mobility, and end lives. Respecting its danger—through traditional processing and education—turns a potential killer back into a crucial, life-saving food.