6. Pica
You may have seen people who are constantly craving non-food substances such as clay, dirt or chalk to chew on. This is a condition known as pica. The craving and eating of non-food substances must have lasted for at least one month to fit the diagnosis of pica. This is usually a result of the low levels of iron in their bodies, hence they are forced to opt for these substances to sate the cravings. Pica is common among children and expectant women. This can be harmful since it can interfere with the absorption of iron from other foods. The exact cause of pica is not clearly known, but it is highly associated with iron deficiency anemia. However, when associated with iron deficiency, physicians see it as an effect rather than a cause. Pica, therefore, shows underlying problems such as low iron levels in the blood.
There is no single medical test for pica. Since it can occur in poor with poor nutrition, doctors can test the blood levels of iron or zinc of someone who habitually craves and eats substances such as chalk or dirt. They can also do blood tests to check for anemia, since low iron levels in the blood, which are thought to trigger pica, result in anemia.
Pica may lead to significant health risks that may require medical intervention. Patients are susceptible to metabolic and electrolyte metabolic, mercury and lead poisoning, hypokalemia, tooth wear, parasitic infections, intestinal obstruction, various problems with the gastrointestinal tract.
Treatment of pica should first address the issue of missing nutrients in the patient, such as iron deficiency. The majority of the cases of pica usually disappear upon iron supplementation. People suffering from pica can also be given medicines to help reduce it if the abnormal eating behavior is due to a developmental disorder.