The short explanation
Eating the same food does not mean needing the same amount of iron. Women lose blood every month through periods, and pregnancy and breastfeeding use up a lot of the body's iron stores. So a diet that keeps a man's iron steady may not be enough to replace what a woman loses. In India several other things add up: largely vegetarian diets where iron is less easily absorbed, tea or coffee taken with meals, worm infections in some areas, pregnancies close together, and women often eating last or less. Inherited conditions such as thalassemia trait are also fairly common in some communities.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Heavy periods are one of the most overlooked causes. If you soak through pads quickly, pass clots or bleed for more than a week, that alone can explain repeated anaemia.
- Low vitamin B12, common in vegetarians, causes a different type of anaemia that iron does not fix.
- National programmes in India screen and supplement women because the problem is so widespread, but an individual still needs her own cause identified.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This explains why anaemia is common in general. It cannot tell you whether you are anaemic or why. A blood test and a talk about your periods, diet and history are needed.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Is my iron store low even if my haemoglobin is normal?
- Could my periods be heavier than they should be?
- Should my B12 be checked as well?
- Does anyone in my family need a thalassemia test?
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 very tired, breathless on mild effort, or your periods have become much heavier.
Raise it at a routine appointment
- Book a routine check with a blood count if you have never had one, especially before planning a pregnancy.
Sources
The evidence this explanation is built on.
- Anaemia World Health Organization
- Iron deficiency anaemia NHS
- Heavy periods NHS
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.
Did this answer your question?
Whatever you choose is filed against this version of the answer, never against you, and it is never shown as a count.
“Explain more simply” asks you which part was hard to follow, so the author knows what to rewrite. “My question is different” opens a private follow-up with this answer attached.
Saving, following up and reporting are all private. Nothing you do on this page is visible to other readers or to the doctor who wrote it, unless you ask a question.