Is the root from tapioca poison?

Yes, the raw root of the tapioca plant, also known as cassava, contains naturally occurring cyanogenic glycosides, which can produce cyanide when metabolized. Consuming raw or improperly processed cassava can lead to cyanide poisoning. However, when properly cooked or processed, such as through soaking, drying, or fermenting, the toxic compounds are significantly reduced, making tapioca safe to eat.