what is pica
Pica is the practice of craving substances with little or no nutritional value. Most pregnancy and pica related cravings involve non-food substances such as dirt or chalk. The word pica is Latin for magpie which is a bird notorious for eating almost anything.he reason that some women develop pica cravings during pregnancy is not known for certain. There is currently no identified cause; however, according to the Journal of American Dietetic Association there may be a connection to an iron deficiency.