Pica is treated by addressing its underlying cause, whether that’s a nutritional deficiency, a developmental condition, or a mental health disorder. There’s no single treatment because pica itself isn’t one disease. It’s a behavior pattern with multiple possible drivers, and the right approach depends entirely on why it’s happening. Most treatment plans combine nutritional correction, behavioral strategies, environmental safety measures, and sometimes medication.
Identifying the Underlying Cause
Before treatment can start, the cause needs to be pinpointed. Pica is formally diagnosed when someone persistently eats non-food items for at least one month and is at least two years old (younger children mouth objects as a normal part of development). The items people eat vary widely: ice, dirt, clay, chalk, paper, hair, paint chips, and dozens of other substances.
The most common medical trigger is iron deficiency. Women with hemoglobin below 12 g/dL and men below 13 g/dL meet the threshold for iron-deficiency anemia, and serum ferritin is the most reliable blood test for confirming low iron stores. Zinc deficiency is another well-established nutritional cause. In many cases, once the deficiency is corrected, the cravings stop on their own.
Pica also occurs at much higher rates in people with autism spectrum disorder and intellectual disabilities. Among children with autism, roughly 23% exhibit pica, and the rate climbs to 28% in autistic children who also have an intellectual disability. In children with developmental delays but no autism, about 8% show pica behaviors. These numbers matter because they point to a different treatment path: behavioral intervention rather than (or in addition to) nutritional supplementation.
Pregnancy is another common context. Pica cravings during pregnancy often go unreported because women feel embarrassed or don’t realize it’s a recognized condition. The cravings are frequently linked to iron or zinc deficiency, though hormonal changes and nausea may also play a role.
Correcting Nutritional Deficiencies
If blood work reveals low iron or zinc, supplementation is the first line of treatment. For iron deficiency, your doctor will typically start oral iron supplements and recheck levels after several weeks. In some cases, the pica behavior resolves surprisingly quickly once iron stores begin to recover.
For zinc, the recommended daily intake for a healthy adult is around 15 mg, with an upper limit of 25 mg per day. Pregnant women need about 20 mg daily. For infants, daily zinc ranges from 1 to 5 mg depending on age. Your provider may recommend doses above the standard daily intake for a limited period if your levels are significantly low, then taper to a maintenance dose.
It’s worth noting that people who eat clay, soil, or starch may actually be worsening their deficiency. Some of these substances bind to iron and zinc in the gut, blocking absorption. So the pica itself can create a cycle: the deficiency drives the craving, and the craving deepens the deficiency.
Behavioral Therapy Approaches
When pica is linked to autism, intellectual disability, or another developmental condition, behavioral intervention is the primary treatment. More than two dozen published studies have examined behavioral techniques for reducing pica in people with developmental disabilities, and several approaches have shown consistent results.
The most commonly used methods include:
- Differential reinforcement: Rewarding a person for choosing appropriate items instead of non-food objects. For example, a child might receive praise, a preferred snack, or access to a favorite activity when they leave a non-food item alone.
- Redirection: Teaching the person to do something specific with the non-food item instead of eating it. One technique involves teaching a child to place objects like cardboard or plastic bottles into a recycling bin, giving them a safe, incompatible behavior to perform.
- Sensory substitution: Offering safe, edible items that mimic the texture or appearance of the craved substance. Dehydrated rice paper or noodles with food coloring can substitute for plastics. Dried beans can replace the look and feel of pebbles or animal droppings. Dried seaweed or salad leaves can satisfy the craving for paper or leaves.
These strategies work best when they’re consistent across settings, meaning everyone involved in the person’s care (parents, teachers, therapists) uses the same approach. A trained behavioral therapist, often one specializing in applied behavior analysis, can design a plan tailored to the specific items being consumed and the situations that trigger the behavior.
Medication Options
There’s no FDA-approved medication specifically for pica, but several drug classes have helped in specific situations. The choice depends on what’s driving the behavior.
When pica resembles obsessive-compulsive behavior, with intrusive thoughts that won’t quiet until the person eats the substance, SSRIs (a type of antidepressant that targets serotonin) have been effective in case reports. One woman with chalk cravings triggered by stress improved within three weeks on an SSRI. A 15-year-old girl who compulsively ate paper responded to a combination of an SSRI and cognitive behavioral therapy. A pregnant woman whose pica was driven by OCD saw significant improvement after two months on treatment.
When pica occurs alongside ADHD, stimulant medications used for attention management have reduced pica episodes. In one case, a preschooler’s pica actually worsened on an antipsychotic medication but improved when switched to a stimulant. This highlights why identifying the correct underlying condition matters so much: the wrong medication can make things worse.
For individuals with severe intellectual disability or autism who haven’t responded to behavioral interventions alone, certain antipsychotic medications at low doses have reduced pica in some cases. An antidepressant that works on dopamine and norepinephrine has also shown benefit in at least one case involving a developmentally disabled adult.
Making the Home Environment Safer
Environmental management is critical, especially for children or individuals with developmental disabilities who may not be able to control the behavior on their own. The goal is to reduce access to dangerous items while treatment takes effect.
A structured approach that has shown results in research involves a specific routine every time you and your child enter a new room:
- Pause at the doorway before entering.
- Scan the room for items your child typically targets.
- Enter before your child to remove those items, or position your body between the child and the item.
- Block entry to rooms that can’t be made safe.
Beyond this room-by-room approach, find alternative storage for commonly targeted small objects like hair ties, rubber bands, coins, and batteries. Childproof locks on cabinets take on extra importance when a child has pica, because the items they seek out often aren’t things standard childproofing anticipates.
Monitoring for Complications
While treatment is underway, it’s important to watch for signs that ingested items have caused harm. The complications depend on what’s been eaten. Intestinal blockages are one of the more serious risks, particularly from items like erasers, hair, fabric, or any material that can accumulate in the digestive tract and form a solid mass called a bezoar. Symptoms include worsening constipation, abdominal pain, vomiting, and a bloated or distended belly. A simple upright abdominal X-ray is usually the first imaging test used to check for swallowed objects or blockages.
Lead poisoning is another major concern, especially in children who eat paint chips or soil contaminated with lead. The CDC recommends chelation therapy (a medication-based treatment to remove lead from the body) and gastrointestinal decontamination when blood lead levels reach 45 micrograms per deciliter or higher. Even at lower levels, lead exposure can affect brain development in children, so any child with pica who may have ingested lead-containing materials should have their blood lead levels checked.
Parasitic infections from eating soil or animal droppings, dental damage from chewing hard objects, and nutritional imbalances from substances that interfere with mineral absorption are all additional risks that may need separate treatment alongside the pica itself.
Pica During Pregnancy
Pica in pregnancy often flies under the radar because it’s rarely asked about during prenatal visits, and many women don’t volunteer the information. The most commonly craved items during pregnancy include ice (pagophagia), clay or dirt (geophagia), and raw starch (amylophagia).
Treatment focuses on correcting the nutritional deficiency, which is almost always iron, zinc, or both. If nausea and vomiting are contributing to unusual cravings, simple alternatives like dry bread, biscuits, or hard candies can help manage the nausea without resorting to non-food items. If you’re pregnant and experiencing cravings for non-food substances, bringing it up at your next prenatal appointment is the fastest path to getting your levels checked and starting the right supplement.