Everyone has unconscious habits—some people play with their hair, while others might bite their nails. For a few, these habits can go further, leading to the urge not only to bite but to eat hair, or even to consume other non-food items like dirt, chalk, or clay. While some of these behaviors might seem harmless, pica is a disorder that requires attention and treatment, as it can become dangerous if it persists.
What is Pica?
Pica is a mental health condition where a person compulsively eats non-food items. It’s most common in children and individuals with certain health conditions. Often, pica is harmless, but some items can pose serious health risks. The objects consumed have no nutritional value or purpose. Because the signs of pica are often missed or not reported to healthcare providers, it’s difficult to know exactly how common the disorder is.
Who does it Impact?
Pica can affect anyone, but three groups are especially at risk: young children, pregnant women, and people with specific health conditions. It’s most frequently seen in those with autism spectrum disorder, intellectual disabilities, or schizophrenia. The exact cause isn’t always clear, but factors like cultural or learned behaviors, stress, anxiety, childhood poverty, nutritional deficiencies, and certain medical conditions may increase the risk.
What is Most Common?
While pica is often associated with eating hair, people may ingest a wide range of non-food items. Common examples include ash, baby powder, chalk, eggshells, feces, paint chips, paper, pebbles, pet food, and soap. Some of these items are relatively harmless, but others can lead to serious health problems such as anemia, roundworm infection, constipation, electrolyte imbalances, lead poisoning, or intestinal blockages. These complications arise because non-food items replace essential nutrients in the diet.
How is it Diagnosed?
A medical diagnosis of pica requires four criteria. The behavior must persist for at least one month. The individual must be old enough to understand that eating non-food items is inappropriate. There should be no cultural or social explanation for the behavior. No underlying health condition should be causing the compulsion. If these criteria are met, doctors may order tests to check for infections, blockages, or heart problems, including blood, urine, stool, and imaging tests.
How is it Treated?
Pica is treatable, and some people may even outgrow it. Pregnant women often see the behavior resolve on its own, and children usually outgrow it as well. For those who need help, therapy is the most common treatment. Mild aversive therapy uses gentle consequences to discourage eating non-food items, while behavioral therapy teaches coping strategies and healthier habits. Differential reinforcement encourages focusing on positive behaviors and activities instead of pica.Â
Moving Forward
While eating non-food items might seem common, having a compulsion to do so over an extended period is unhealthy and can lead to severe health issues. Fortunately, therapy and support are available to help individuals manage and overcome these behaviors. Remember, help is always available, and no one has to face pica alone
