Why do I crave. To eat dirt. Is my iron low?

PICA. Pica is a pattern of eating non-food materials, such as dirt. It is seen more in young children than adults. Between 10 & 32% of children ages 1 - 6 have these behaviors. It can also occur during pregnancy. A lack of certain nutrients, such as iron deficiency anemia and zinc deficiency, may trigger the unusual cravings. Pica may also occur in adults who crave a certain texture in their mouths.
Pica. Pica is characterized by an appetite for substances largely non-nutritive, such as clay, chalk, dirt, or sand. Iron deficiency is one of the causes of pica. Possible.