Pica is the consumption of nonfood substances, especially clay or dirt, and is thought by some to be associated with iron deficiency

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Pica is often associated with iron deficiency, as well as other nutrient deficiencies such as zinc or calcium. Consuming nonfood substances like clay or dirt can provide these nutrients in small amounts, leading to the craving for them. However, pica can also be caused by cultural or psychological factors and should always be evaluated and treated by a healthcare professional.

Pica Is the Consumption of Nonfood Substances, Especially Clay or Dirt