Unlike the lima bean, which contains minute amounts of linamarin, cassava, especially the bitter brand, contains enough to cause acute cyanide intoxication, goiters (swelling of the neck or larynx resulting from enlargement of the thyroid gland), ataxia (a neurological disorder affecting the ability to walk, also known as konzo), and has also been linked to tropical calcific pancreatitis in humans, leading to chronic pancreatitis. Needless to say, a good dose of cassava can kill you. Cassava, also known as manioc or yuca, is the 5th most important crop in the world by production. It’s importance in Africa and South America cannot be overstated. It’s a drought-resistant crop that does well in poor soils and thus a starch-heavy lifesaver for low-income areas. Obviously, people who consume cassava know how to prepare it to get rid of the toxic levels of cyanogenic glucosides.