Medical Oncologist
Blood counts
Foods to improve haemoglobin
Only a little, and it is fairer to say so. When haemoglobin falls during chemotherapy it is usually because the marrow making red cells has been slowed by the drugs, and food cannot speed up a suppressed marrow. Where diet genuinely helps is in preventing a second problem on top — a real shortage of iron, B12 or folate, or simply not eating enough for weeks.
NG
Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed September 2026, next review due September 2027
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The short answer
Can food raise your haemoglobin during chemotherapy?
Only a little, and it is fairer to say so than to imply otherwise. When the haemoglobin falls during chemotherapy, it is usually because the marrow that makes red cells has been slowed by the drugs. Food cannot speed up a marrow that is being suppressed.
Where diet genuinely helps is in making sure a second problem is not added on top — a real shortage of iron, vitamin B12 or folate, or simply not eating enough for weeks. Those do happen during treatment, and eating well prevents them.
Why this page is not a list of wonder foods
Because beetroot juice, dates and pomegranate get recommended with enormous confidence, families spend real money and effort on them, and people then stay exhausted for weeks believing the food will fix it instead of reporting the symptoms. That delay is the harm.
Eat well because it helps you tolerate treatment. Do not use food as a substitute for telling your team how tired you are.From the Indian kitchen
What is genuinely worth eating
Ordinary food, eaten regularly. All of this is worth doing; none of it is a treatment.
Iron from animal sources
Absorbed far better than iron from plants. Liver, red meat, chicken, fish and egg. Small amounts eaten regularly do more than occasional large helpings, and cooking them soft helps if the mouth is sore.
If meat tastes metallic
- Move to chicken, fish and egg
- Marinate in curd and lemon before cooking
Iron from plants
Dal, rajma, chana, spinach and other greens, ragi, bajra, jaggery, sesame and dried fruit. Less well absorbed, which is why the next card matters more than most people realise.
Vitamin C with the meal
This is the single most useful trick here. A little lemon, amla, guava or tomato eaten alongside plant iron increases how much is absorbed, and it costs nothing.
Leave the lemon out if the mouth is sore — it will sting.B12 and folate
Milk, curd, paneer, eggs and fish for B12, which is a genuine concern for long-term vegetarians. Greens, dal and sprouts for folate. A real shortage of either shows up on blood tests.
Enough food overall
More important than any single item. Someone eating very little for weeks will have a lower haemoglobin than they need to, whatever is on the plate. Protein and calories first, iron-rich choices second.
Tea and coffee, away from meals
Both reduce how much iron is absorbed from food. Having them between meals rather than with them is a small, free change worth making if you drink a lot of either.
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No food is the answer to these — go in the same day
Breathlessness at rest or on very little effort · chest pain · a racing heart that will not settle · fainting or nearly fainting · confusion or unusual drowsiness · black tarry motions, blood in the motions or vomit, or any heavy bleeding · a fever alongside any of these. Go to the nearest emergency department and say clearly that the person is on chemotherapy. Bleeding needs finding and stopping, not feeding.
The popular remedies
Beetroot, dates and pomegranate, honestly
All three are perfectly good foods and none of them will correct a treatment-related fall in haemoglobin. They are worth eating if they are enjoyed; they are not worth relying on, and they are not worth spending heavily on.
Beetroot
The colour has convinced generations that it builds blood. Its actual iron content is modest. It is a decent vegetable with useful folate, and that is the honest summary. Beetroot also turns urine and motions reddish, which alarms people who then think they are bleeding.
Dates, raisins and figs
Reasonable sources of plant iron and genuinely useful during treatment for a different reason — soaked overnight they help with the constipation that anti-sickness medicines cause. Worth eating, for that as much as for the iron.
Pomegranate and apple
Pleasant, easy to eat when appetite is poor, and low in iron. Their reputation here comes from colour and tradition rather than content. If they are what someone will eat, that is reason enough to serve them.
Cooking in an iron vessel
This one has something to it. Cooking acidic foods in iron cookware does add a small amount of iron to the meal. It is a marginal effect rather than a treatment, and it is free, so there is no reason not to.
Tell your team about any tonic or supplement you are taking, including ayurvedic preparations. Some interact with treatment.Being straight with you
What this page cannot tell you
It cannot tell you why your haemoglobin is low, and the cause decides whether food has any part to play at all. Marrow suppression, bleeding, kidney changes and a genuine shortage of iron or vitamins all look the same on a single reading and are managed completely differently.
It also cannot give you amounts. How much protein and iron you need depends on your weight and treatment, and kidney disease and diabetes both change this advice substantially. A dietitian can build something around what your household actually eats.
What it should not be used for
Do not use diet as a reason to delay reporting symptoms, and do not start iron or any supplement on the strength of it. Both of those are decisions for your team after tests, and unnecessary iron causes constipation at exactly the wrong moment.
What to do next
Eat regularly, with protein at most meals and something containing vitamin C alongside plant iron. Move tea and coffee away from mealtimes. Ask whether your iron, B12 and folate have actually been tested. And report the tiredness rather than eating your way around it.
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Questions we are asked
Common questions about food and haemoglobin
Does beetroot really increase haemoglobin?
Not meaningfully. Its iron content is modest and the reputation comes largely from the colour. It is a good vegetable with useful folate and worth eating if enjoyed. It will not correct a fall caused by the marrow being suppressed by chemotherapy.
How long would it take for diet to make a difference?
Weeks at best, and only if a genuine dietary shortage was part of the problem. Where the cause is marrow suppression, diet will not raise the level however long you persist. That is the main reason not to wait on food before reporting symptoms.
Can a vegetarian get enough iron?
It takes more deliberate effort, because plant iron is less well absorbed. Dal, rajma, chana, greens, ragi, jaggery and sesame, with something containing vitamin C alongside, and tea and coffee moved away from meals. Long-term vegetarians should also have B12 checked.
My urine has gone reddish after eating beetroot. Is that blood?
Beetroot does colour urine and motions reddish and it is harmless. But do not assume during chemotherapy — platelets may be low and bleeding is a genuine possibility. If you are at all unsure, report it and let someone check rather than deciding at home.
Should we buy an iron tonic from the chemist?
Ask your team first and take the bottle with you. A low haemoglobin during chemotherapy is usually not from a shortage of iron, unnecessary iron causes constipation when the bowel is already slowed, and some tonics contain other ingredients that interact with treatment.
Does drinking tea really matter?
Tea and coffee do reduce iron absorption from food, so having them between meals rather than with them is a sensible free adjustment if you drink a lot. It is a marginal gain rather than a solution, and it is not worth giving up something you enjoy entirely.
What if she cannot eat much at all?
Then intake itself is the problem to solve rather than the iron content of what little goes in. Prioritise fluids, then calories and protein in whatever form is accepted, and ask for a dietitian. Report it, because poor intake over weeks makes everything else harder.
Are there foods to avoid?
Nothing specific for haemoglobin beyond keeping large amounts of tea and coffee away from meals. What matters much more during treatment is food safety in the low-count days — freshly cooked, nothing standing, no street food. Ask your team what they restrict for you.
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Sources
- National Cancer Institute — Nutrition in Cancer Care (PDQ)
- Cancer Research UK — Diet problems and cancer treatment
- Macmillan Cancer Support — Low red blood cell count
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
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