The short explanation
Cravings for non-food things like chalk, ash, clay, mud or raw rice during pregnancy are called pica. They are more common than many women realise, and they are often linked to low iron. You are not doing anything shameful by having these cravings, and doctors hear about them regularly. Eating non-food items can be harmful, because they may contain dirt, germs, worms or harmful substances such as lead, and can reduce absorption of nutrients from food. Please tell your doctor about the cravings. They will likely check your haemoglobin and iron, and treating anaemia often reduces the cravings.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Chewing ice is less harmful than eating clay or ash, but still a clue that iron may be low.
- If you have already been eating these items, mention how much and for how long, so the doctor can decide whether any other tests are needed.
- Iron and folic acid are provided free at government antenatal clinics.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you whether the cravings are due to low iron or whether anything you ate has caused harm. Your doctor will assess you.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Could my cravings be due to low iron?
- Has eating chalk or ash caused any harm?
- Do I need any extra tests?
- How can I manage these cravings?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Emergency — call 112 now
- Call 112 or go to the labour ward if you have bleeding, severe stomach pain, fainting or severe breathlessness.
Book an appointment soon
- See your doctor within a few days to discuss the cravings and check your iron.
Raise it at a routine appointment
- Keep all antenatal appointments and blood tests.
Sources
The evidence this explanation is built on.
- Iron deficiency anaemia NHS
- Anemia MedlinePlus (US National Library of Medicine)
- Anaemia World Health Organization
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
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