Pica in adults is an eating disorder characterised by persistent cravings for or consumption of non-food substances, such as dirt, chalk, paper, or ice. While these behaviours may seem unusual, they can sometimes signal an underlying nutritional deficiency or medical condition and may lead to serious health complications.
Understanding the symptoms and possible causes is essential for knowing when to seek help. This blog explores the common signs of pica in adults, factors that may contribute to its development, how doctors diagnose and treat the condition, and which warning signs require urgent medical attention.
What Is Pica In Adults And How Does It Develop?
Pica is a condition in which a person feels a strong urge to repeatedly eat things that are not food, such as dirt, chalk, paper, or hair.
The condition can affect adults and may occur alongside nutritional deficiencies, pregnancy, or certain developmental and mental health conditions.
Pica is generally diagnosed when a person persistently eats non-food, non-nutritive substances for at least one month, the behaviour is inappropriate for their developmental level, and it is not part of a culturally accepted practice. If the behaviour occurs alongside another medical or mental health condition, its severity must also warrant specific clinical attention.
It is not simply a matter of unusual taste or poor judgment. Understanding what a person consumes and why is important for identifying possible health risks and appropriate treatment.
Which Non-Food Items Do Adults With Pica Consume?
The substances involved vary from person to person. Some adults repeatedly crave one particular material, while others consume several types of non-food items.
Examples include:
- Ice: Persistent ice chewing or consumption, known as pagophagia, which may be associated with iron deficiency.
- Soil or clay: Eating dirt, mud, or clay.
- Paper: Chewing or swallowing paper, cardboard, or tissue.
- Chalk: Consuming chalk or similar powdery substances.
- Hair: Swallowing hair, a behaviour known as trichophagia.
- Other materials: Soap, ash, laundry starch, paint chips, or small pieces of fabric.
Not every unusual craving indicates pica. The substance, frequency, duration, circumstances, and possible cultural context all matter when a clinician evaluates the behaviour.
Recognising the types of substances involved also helps determine which symptoms and complications to watch for.
What Symptoms Can Indicate Pica In Adults?
The main sign of pica is repeatedly eating non-food substances. Some adults experience strong cravings before consuming an item, while others describe a persistent urge or difficulty resisting the behaviour.
Possible signs include:
- Repeatedly eating substances that are not intended for consumption.
- Feeling a strong urge to chew or swallow a particular non-food material.
- Hiding the behaviour because of embarrassment or fear of judgment.
- Continuing the behaviour despite knowing it may be harmful.
- Spending time seeking out or obtaining the substances.
Some people also experience symptoms related to nutritional deficiencies or complications from what they have swallowed. These symptoms can vary considerably and may not be present initially.
Which Physical Symptoms May Accompany Pica?
Physical symptoms depend on the substance consumed, the amount, and how it affects the body.
| Symptom | Possible concern |
| Fatigue, weakness, or dizziness | Iron-deficiency anaemia or another medical problem |
| Abdominal pain or bloating | Digestive irritation or a possible blockage |
| Persistent constipation | Difficulty passing material through the digestive tract |
| Nausea or vomiting | Gastrointestinal irritation or obstruction |
| Dental pain or damage | Chewing hard or abrasive substances |
| Unusual symptoms after eating paint or soil | Possible exposure to toxins, lead, or infectious organisms |
These symptoms do not automatically mean someone has pica. They require assessment based on the person’s history and the substances involved.
Because pica can have several underlying causes, identifying the associated symptoms is an important step towards understanding what may be driving the behaviour.
What Causes Pica In Adults And Who Is At Risk?
There is no single explanation for pica. Research suggests that nutritional, medical, developmental, and psychological factors may be involved, although the relationship between these factors and the behaviour is not always clear.
Possible contributing factors include:
- Iron deficiency: Pica, including ice cravings, is associated with iron deficiency and iron-deficiency anaemia.
- Other nutritional deficiencies: Low levels of certain nutrients, including zinc, may be associated with pica.
- Pregnancy: Some people develop non-food cravings during pregnancy.
- Developmental conditions: Pica may occur alongside intellectual disabilities or autism spectrum disorder.
- Mental health conditions: Certain psychiatric conditions may coexist with pica.
- Sensory preferences or learned behaviours: Texture, sensory experiences, or established habits may contribute in some cases.
These factors do not mean that everyone with a particular condition will develop pica. Nor does the presence of pica automatically establish a nutritional deficiency.
How Can Iron Deficiency Relate To Pica?
Iron deficiency is one of the important medical associations clinicians consider when an adult reports pica symptoms.
Some people with low iron levels develop cravings for ice, soil, or other non-food substances. The precise relationship is not fully understood, and the craving alone cannot confirm that iron deficiency is present.
Iron deficiency can also cause symptoms such as:
- Persistent tiredness or low energy.
- Pale skin.
- Headaches or dizziness.
- Shortness of breath.
- Heart palpitations.
- Difficulty concentrating.
A healthcare professional may recommend blood tests to check iron levels and assess for anaemia. If a deficiency is found, the clinician will also investigate its possible cause rather than assuming that diet alone is responsible.
Understanding whether a medical issue is contributing to the cravings helps guide the next stage of assessment.
How Do Doctors Diagnose Pica In Adults?
There is no single test that confirms pica. Diagnosis usually involves discussing the person’s eating behaviour, examining relevant medical factors, and determining whether the behaviour meets recognised diagnostic criteria.
A healthcare professional may ask:
- What substances are being eaten or swallowed?
- How often does the behaviour occur?
- How long has it been happening?
- Are there cravings, triggers, or situations that make it more likely?
- Are there any physical symptoms or complications?
- Could a medical condition, medication, or cultural practice explain the behaviour?
The clinician may also ask about eating habits, mental health, medications, and relevant medical history. Honest answers help them assess risk without making assumptions about the person’s intentions.
Which Medical Tests May Be Recommended For Pica?
Testing depends on the substances consumed and the symptoms reported. A clinician may recommend:
- Blood tests: To assess a complete blood count and iron status, with other nutrient tests when indicated.
- Lead testing: If paint chips or other potential sources of lead have been swallowed.
- Additional laboratory tests: If there is concern about infection, electrolyte abnormalities, or other complications.
- Imaging: If symptoms suggest an intestinal blockage or another internal problem.
- Other targeted investigations: Depending on the material consumed and the person’s medical history.
Not everyone needs every test. The purpose is to identify contributing conditions and check for harm caused by the behaviour.
Once the cause and any complications are better understood, a treatment plan can be tailored to the person’s needs.
When Should Adults Seek Treatment For Pica Symptoms?
Adults should arrange a medical appointment if they repeatedly crave or consume non-food substances, particularly if the behaviour continues over time or is difficult to control. There is no need to wait until symptoms become severe.
Early assessment can help identify nutritional deficiencies, explain persistent cravings, and reduce the risk of complications. It can also give the person a confidential setting to discuss a behaviour that may feel embarrassing.
Which Pica Symptoms Require Urgent Medical Attention?
Some substances can cause serious harm even when swallowed in small amounts. Seek urgent medical advice if you have swallowed a potentially toxic substance, a sharp object, or an item that could cause a blockage.
Seek emergency care immediately if you experience:
- Severe or worsening abdominal pain.
- Persistent vomiting or a swollen abdomen.
- Inability to pass stool or gas with abdominal symptoms.
- Blood in your vomit or stool.
- Difficulty breathing, seizures, or confusion after a possible toxic exposure.
If someone swallows a battery, a magnet, a sharp object, or a potentially poisonous material, do not wait for symptoms to appear. Contact emergency services or a poison information service for immediate guidance. Do not induce vomiting unless a qualified professional specifically instructs you to do so.
Recognising these warning signs helps distinguish a routine appointment from a situation that needs immediate medical care.
How Is Pica In Adults Treated And Managed?
Treatment depends on what the person consumes, whether a medical condition is contributing, and how the behaviour affects daily life. There is no single treatment that works for everyone.
Care may include:
- Treating nutritional deficiencies: Iron or other supplements may be prescribed when tests confirm a deficiency.
- Managing medical complications: Problems such as lead exposure, infection, or intestinal obstruction require appropriate medical treatment.
- Behavioural support: A qualified professional may help identify triggers, change patterns, and develop safer responses to cravings.
- Psychological support: Therapy may be useful when stress, emotional difficulties, or co-occurring mental health concerns contribute to the behaviour.
- Reducing exposure to harmful substances: Practical changes can help limit access to dangerous items while treatment is underway.
People should not begin high-dose iron or other supplements without medical advice. Taking supplements unnecessarily can cause harm and may delay investigation of the underlying problem.
Can Therapy Help Adults Manage Pica Behaviours?
Therapy may help some people understand patterns surrounding pica and develop strategies to reduce harmful behaviours. The approach should be based on the person’s circumstances and any co-occurring conditions.
Depending on individual needs, support may involve:
- Identifying situations or emotions associated with the urge.
- Recognising patterns that occur before the behaviour.
- Developing alternative responses to cravings.
- Learning practical ways to manage triggers.
- Addressing distress, shame, or difficulties discussing symptoms with others.
Evidence for specific psychological treatments for pica remains limited. Behavioural approaches may help some people, but treatment should be individualised according to the person’s needs, the substances consumed, and any underlying medical or developmental conditions. Nutritional deficiencies and physical complications also require appropriate medical care.
Psychological care works best alongside medical assessment when nutritional deficiencies or physical complications may be present.
How Weiss Wellness Can Support Eating-Related Concerns
Pica can be difficult to discuss, especially when a person feels embarrassed about their cravings or worries about being judged. Supportive care can help people explore eating-related concerns and identify appropriate next steps.
Weiss Wellness, a multidisciplinary psychotherapy practice in Ridgewood, New Jersey, provides psychotherapy for concerns including eating disorders. Its services include individual and family psychotherapy, and the practice collaborates with dietitians and physicians when needed.
Pica-specific treatment is not explicitly listed among its published services. If you are seeking psychological support for pica, contact the practice to discuss your concerns and whether its services are appropriate for your situation.
If pica-related concerns are affecting your emotional well-being, you can explore psychotherapy services at Weiss Wellness and discuss whether the practice may be an appropriate fit. Suspected nutritional deficiencies, toxic exposure, or physical complications require assessment by a qualified medical professional.
Final Thoughts: Recognising Pica Can Help Protect Health
Pica in adults involves persistent consumption of non-food substances and can have several possible causes, including nutritional deficiencies and certain medical or developmental conditions. The behaviour may seem harmless at first, but some substances can cause poisoning, infections, dental damage, or intestinal blockages. Recognising persistent cravings and discussing them with a healthcare professional can help identify underlying problems before complications develop. Treatment depends on the person’s needs and may involve medical care, correcting deficiencies, and behavioural or psychological support. If you or someone you know is experiencing pica symptoms, seek professional guidance rather than trying to manage the behaviour alone. Early assessment can help determine the safest next steps.
Frequently Asked Questions
Yes. Pica can occur in adulthood, although its onset and contributing factors vary. Persistent cravings or consumption of non-food substances should be discussed with a healthcare professional to identify possible causes.
Repeatedly chewing or consuming ice can be a form of pica. It may also be associated with iron deficiency. A healthcare professional can assess your symptoms and determine whether blood tests are appropriate.
Pica may improve when contributing factors are addressed, but outcomes vary. Because some substances cause serious complications, persistent cravings or consumption should be medically assessed rather than left unchecked.
No. Iron deficiency is an important association, but pica can have other contributing factors. Blood tests and a medical assessment are needed to determine whether a deficiency is present.
Stress may contribute to some people’s behaviours, but it is not the only explanation. Nutritional deficiencies, developmental factors, and medical conditions should also be considered during assessment.
Do not start high-dose iron supplements without medical advice. A clinician can test your iron status, investigate possible causes of deficiency, and recommend the appropriate treatment if needed.
Yes. Swallowed materials may cause constipation, intestinal blockages, or internal injury. Toxic substances can also cause poisoning. Severe abdominal pain, persistent vomiting, or other warning signs require urgent medical assessment.
Start with a primary care doctor, who can assess your symptoms and arrange appropriate tests. Depending on the findings, you may also need a dietitian, mental health professional, or specialist.
