# Autism and Pica: Why Children Eat Non-Food Things (and How to Help)

> Pica — eating things that aren't food — is more common in autistic children. Why it happens, the safety risks to know, and practical ways to keep your child safe.

_Source: Autism Parent Guide (https://autismparentguide.org/daily-life/pica) · Last reviewed 2026-06-01 · Reviewed by Parent reviewer and Developmental paediatrics adviser._

## Quick answer

Pica means regularly eating things that aren't food — like paper, soil, stones, fabric or chalk. It's more common in autistic children and can be driven by a sensory need, exploration, anxiety, or occasionally a nutritional issue. It is **not naughtiness** — but it **can be dangerous** (choking, poisoning, blockages), so safety comes first: keep risky items out of reach, offer safe sensory alternatives, and talk to your doctor.

## When pica is an emergency

Seek **emergency help** if your child may have swallowed something dangerous — for example **button batteries, magnets, sharp objects, medicines or chemicals** — even if they seem fine, as some of these cause serious harm quickly. Call your local poison line or emergency services.

Also see a doctor promptly if your child has tummy pain, vomiting, constipation, or you think they may have swallowed something that could cause a blockage. Always tell your doctor about ongoing pica so they can check for causes such as low iron.

## What parents can do today

- Do a quick safety sweep — secure medicines, batteries, chemicals and small/sharp objects.
- Notice patterns: what does your child mouth or eat, and when (bored, anxious, understimulated)?
- Offer safe alternatives — chew toys/jewellery, crunchy snacks, oral sensory tools.
- Teach a simple 'for eating / not for eating' idea using pictures.
- Tell your doctor about the pica and ask whether to check for deficiencies.

## Why pica happens

Pica usually meets a need, even if it looks puzzling. Common reasons include:

- **Sensory seeking** — craving a particular taste, texture or strong oral input.
- **Exploration** — younger children explore the world through their mouths for longer.
- **Anxiety or self-regulation** — mouthing or chewing to calm down (see [sensory overload](/daily-life/sensory-overload)).
- **Communication** — signalling hunger, boredom or a need that's hard to express.
- **Nutritional factors** — occasionally linked to low iron or zinc, which a doctor can check.

Understanding the *why* points you to the most helpful response — usually meeting the need a safer way.

## Keeping your child safe

Safety comes before everything else:

- **Secure dangerous items** — lock away medicines, button batteries, magnets, cleaning products and small/sharp objects; keep an eye on plants and small toys.
- **Supervise** in higher-risk places (garden, bathroom, bin areas).
- **Know what to do** if your child swallows something dangerous — keep your poison line and emergency numbers handy.
- **Watch for warning signs** of choking or a blockage (pain, vomiting, not passing stools).

Making the environment safer buys you time while you work on the underlying need.

## Offering safe alternatives

Aim to give your child the *input they're seeking* in a safe way:

- **Chew tools** — chewable jewellery ('chewlery'), chew toys, or chewy/crunchy safe snacks.
- **Strong sensory food options** — crunchy, sour or chewy foods (alongside support for [fussy eating](/daily-life/eating)).
- **Oral-motor and sensory tools** — straws, vibrating brushes, drinking thick drinks through a straw.
- **Meet the underlying need** — more movement and sensory play if it's about stimulation; calming strategies if it's anxiety.
- **Teach the difference** — a clear, repeated 'this is for eating / this is not for eating' with [picture cards](/communication/picture-cards).

An occupational therapist or speech and language therapist can help tailor this to your child.

## When to see a doctor

Always mention pica to your doctor, even if it seems mild. They may:

- **Check for deficiencies** such as low iron, which can sometimes drive pica.
- **Refer to specialists** — an OT or SLT for sensory and feeding support, or others as needed.
- **Advise on safety** and what to do in an emergency.

Pica often reduces with the right mix of safety, meeting the sensory need, and addressing any medical cause — but it's a team effort, so don't try to manage it alone.

## Frequently asked questions

### What is pica?

Pica is regularly eating things that aren't food — such as paper, soil, stones, fabric or chalk. It's more common in autistic children and can have sensory, emotional or occasionally nutritional causes.

### Why does my autistic child eat non-food things?

Often to meet a sensory need (taste, texture, oral input), to explore, to self-regulate when anxious, or to communicate a need. Occasionally it's linked to a nutritional deficiency, which a doctor can check.

### Is pica dangerous?

It can be — risks include choking, poisoning, and blockages. Swallowing items like button batteries, magnets or chemicals is an emergency. Keeping dangerous items out of reach is the first priority.

### How do I stop my child eating non-food items?

Make the environment safe, work out what need it meets, and offer safe alternatives (chew tools, strong-sensory snacks, oral sensory toys). Teach 'for eating / not for eating', and see your doctor about causes and support.

## Sources

- Pica — NHS
- Pica and autism — Raising Children Network
- Eating and feeding concerns — American Academy of Pediatrics (AAP)

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**Not medical advice.** This information is general and educational. Always speak to a qualified professional about your individual child.

Free parent tools: build printable communication cards at https://autismparentguide.org/toolkit/cards