Functionally, these neurons are either motor (conducting impulses that will cause activity such as the contraction of muscles) or association (conducting impulses and permitting 'communication' between neurons within the central nervous system).
The scant research that has been done on the causes of pica suggests that the disorder is a specific appetite caused by mineral deficiency in many cases, such as iron deficiency, which sometimes is a result of celiac disease or hookworm infection.
Low potassium (hypokalemia) If the level of potassium in your blood drops below normal, it may cause low energy, leg cramps, and more. Pica Pica is an eating disorder that involves eating non-food items such as paper or dirt.