What is the medical term meaning persistent eating of non-nutritional substances such as clay?

The medical term for persistent eating of non-nutritional substances such as clay is pica. Pica is pica is the persistent eating of non-nutritive substances such as dirt, clay, chalk, or paper. It is typically seen in children and pregnant women, but it can also occur in adults. Pica can be caused by a variety of factors, including nutritional deficiencies, mental health conditions, and cultural practices. In some cases, pica can lead to health problems such as intestinal obstruction, lead poisoning, and other nutrient deficiencies.