The short explanation
Your grandmother has a point. Cooking in a cast-iron kadai or tawa can add a small amount of iron to food, especially when cooking moist, acidic dishes such as tomato-based curries, sambar or rasam, and when cooking for longer. Some studies suggest this can help iron intake modestly over time. It is a useful habit, but not a treatment. If you are already anaemic, an iron kadai alone will not be enough, and a doctor may suggest supplements. Iron cookware needs to be dried and lightly oiled to prevent rust.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Combining iron cookware with iron-rich foods and vitamin C sources, and keeping tea away from meals, gives the best effect.
- People with conditions that cause iron overload, such as haemochromatosis, or those on regular blood transfusions, should ask their doctor before relying on iron cookware.
- Non-stick pans do not add iron; whether you use them is a matter of convenience and care for the coating.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you how much iron your cooking adds or whether it is enough for you. Blood tests show your iron status.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Is my iron low enough to need supplements?
- Will cooking changes help in my case?
- Is there any reason I should avoid extra iron?
- When should my levels be rechecked?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Book an appointment soon
- See a doctor within a few days if you are breathless, dizzy or very tired.
Raise it at a routine appointment
- Book a routine check of your haemoglobin if you have never had one.
Sources
The evidence this explanation is built on.
- Iron NHS
- The vegetarian diet NHS
- Iron MedlinePlus (US National Library of Medicine)
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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