Pica: Pica describes a disorder that causes your body to crave items and substances with no nutritional value. The most common cravings are for dirt and chalk. 25 to 33 percent of all pica cases involve small children, 20 percent involve pregnant women and 10 to 15 percent involve individuals with learning disabilities. A small percentage of those affected have iron or vitamin d deficiency. See your do.
Answered 11/13/2013
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