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Anaemia in older adults: never just old age | CION Cancer Clinics
No, anaemia is not a normal part of ageing. A low haemoglobin is common in people over sixty-five, but healthy older adults usually keep a normal count, so a low result nearly always has a cause. Often it is something treatable, such as low iron, low vitamin B12 or kidney disease. This page explains the common causes, the signs families mistake for age, and when a low count needs same-day care. At CION Cancer Clinics, our haematologist cares for anaemia, bleeding, clotting and inherited blood disorders, with ArogyaSri, CGHS and cashless insurance accepted.
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Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
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On this page
- Is a low haemoglobin just part of getting old?
- What commonly causes anaemia in older adults?
- What do families believe about anaemia in old age?
- Why does a mild low count matter in an older person?
- What do the words on the blood report mean?
- What should you do next, and what can this page not tell you?
- Common questions about anaemia in older adults
The short answer
Is a low haemoglobin just part of getting old?
No. Anaemia, which means a low haemoglobin, is common in older adults, but it is not a normal part of ageing. Healthy people in their seventies and eighties usually keep a haemoglobin in the normal range, so a low result almost always has a reason worth finding.
Why families are told otherwise
A low count often creeps down slowly. Your father may simply seem slower, more tired or more forgetful, and it is easy to put that down to age. Sometimes a busy clinic says the same thing. The result is that the real cause, which may be simple to treat, is missed for a long time.
What the cause usually turns out to be
In most older people the cause is something ordinary. Iron may be slowly lost from the gut. Vitamin B12 may not be absorbed well. The kidneys may be making less of the hormone that tells the bone marrow to produce red cells. Less often, the marrow itself, the factory inside the bones where blood is made, is not working properly. Each of these is handled very differently, which is why the cause matters more than the number.
A low haemoglobin is a finding, not a diagnosis. The next step is always to ask why it is low.Where it comes from
What commonly causes anaemia in older adults?
More than one cause is often present at the same time. Your doctor looks for all of them, not just the first one found.
Slow blood loss
Small, hidden bleeding from the stomach or bowel drains iron over months. Pain relievers for joints, blood thinners, ulcers and growths in the bowel are all possible sources.
A clue on the report
- Small, pale red cells
- Low ferritin, the iron store
Low vitamin B12 or folate
The stomach absorbs less B12 with age, and some diabetes and acid medicines reduce it further. Poor appetite and a limited diet add to it.
Low B12 can also cause tingling feet and memory change, so it is worth checking.Kidney disease and long-term illness
Weaker kidneys make less of the signal that drives red cell production. Long-standing arthritis, infection or heart failure can also hold the count down.
A bone marrow problem
Less commonly, the marrow is the cause. Conditions such as myelodysplastic syndrome, where the marrow makes faulty cells, or myeloma may first show up as anaemia that has no other explanation.
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When a low haemoglobin cannot wait
Go to the nearest emergency department the same day, or call 108, if an older person with a low count has chest pain, is breathless while resting, faints or becomes suddenly confused, or passes black, tarry stools or vomits blood. These can mean fast bleeding or a strained heart. Do not wait for the next clinic appointment, and do not start iron tablets at home first.
Commonly believed
What do families believe about anaemia in old age?
"She is eighty. Her blood is bound to be weak."
Age alone does not explain a low haemoglobin. Many people in their eighties have normal counts. Accepting it as age means a treatable cause, such as low iron or low B12, can go unchecked for years.
"We will just give iron tonic and see."
Iron helps only if iron is what is missing. If the cause is bleeding from the bowel, iron can lift the count and hide the real problem. Find the cause first, then treat it with your doctor's advice.
"It is only a little low, so it does not matter."
Even a mild fall in haemoglobin is linked with more falls, tiredness and poorer thinking in older adults. How far the count has dropped from their usual level matters as much as the number itself.
"A blood test for anaemia means they suspect cancer."
Most anaemia in older people is not caused by cancer. Tests look for the common causes first. A marrow or bowel problem is checked for when the simpler answers do not fit.
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Why it matters
Why does a mild low count matter in an older person?
A low haemoglobin means less oxygen reaches the brain, the heart and the muscles. A younger person may barely notice. An older body, often already managing heart, lung or kidney problems, has less room to adjust.
What you may notice at home
Look for tiredness that does not lift with rest, getting out of breath on the stairs, dizziness on standing up, pale skin or inner eyelids, new swelling of the ankles, and falls. Some elders become quieter, lose interest in food or seem more muddled. These changes are easy to blame on age, which is exactly why they are missed.
What it can do over time
Untreated anaemia makes the heart work harder and can worsen existing heart failure or chest pain. It adds to frailty and the risk of a fall, and it can slow recovery after an illness or an operation. Treating the cause often brings back energy and steadiness.
Write down when you first noticed a change. It helps your doctor judge how quickly the count has fallen.On the report
What do the words on the blood report mean?
- Haemoglobin (Hb)
- The protein in red cells that carries oxygen. The World Health Organization sets a slightly higher lower limit for men than for women. Each laboratory prints its own range beside the result.
- MCV
- The average size of the red cells. Small cells point towards low iron; large cells towards low B12, folate, alcohol, thyroid or marrow causes.
- Ferritin
- A measure of stored iron. Low ferritin means low iron, but illness can push it up and hide a shortage.
- Vitamin B12 and folate
- Vitamins the marrow needs to make healthy red cells.
- Creatinine or eGFR
- Measures of kidney function, checked because weak kidneys can cause anaemia.
- Reticulocyte count
- Young red cells. It shows whether the marrow is trying to keep up.
Being straight with you
What should you do next, and what can this page not tell you?
Take the report to the family doctor or physician and ask one plain question: why is the haemoglobin low? Bring older reports too, because a falling trend tells the doctor far more than one result. Bring a list of every medicine, including pain relievers and tonics.
When a haematologist is involved
A blood specialist is usually asked to see an older person when the common causes have been checked and nothing fits, when other counts such as white cells or platelets are also abnormal, or when the count keeps falling despite treatment. At CION the haematology team reviews these cases and arranges any further tests with qualified centres.
What this page cannot tell you
It cannot tell you the cause of your parent's anaemia, or whether it is serious. A single result is always read alongside symptoms, other illnesses and repeat tests. For a very frail person, the family and doctor may also decide together that some tests are not worth the strain, and that is a reasonable choice.
Questions we are asked
Common questions about anaemia in older adults
Is it normal for haemoglobin to drop with age?
A small drift can happen, but a result below the laboratory's normal range is not explained by age alone. Most healthy older people keep a normal haemoglobin. When it is low, there is usually a cause such as low iron, low B12, kidney disease or long-term illness, and finding it is worthwhile.
My mother's haemoglobin is low but she feels fine. Should we still check?
Yes, in most cases. Feeling fine does not rule out slow bleeding or a vitamin shortage, and older people often adapt to a low count without noticing. A few simple blood tests usually point to the cause. How far to investigate is a decision to make with her doctor, based on her overall health.
Can we start iron tablets without seeing a doctor?
It is safer not to. Iron only helps when iron is low, and it can raise the count enough to hide bleeding from the stomach or bowel. Iron can also upset the stomach and cause constipation in older people. Let the doctor confirm the cause and decide on treatment first.
Does anaemia in an elderly person mean cancer?
Usually not. Most anaemia in older adults comes from iron or vitamin shortage, kidney disease or long-term illness. A bowel growth or a bone marrow condition is one possible cause, which is why doctors look for the reason rather than assuming. The tests are meant to find the answer, not to confirm a fear.
Why is my father being asked for a stool test or scope?
When iron is low in an older man, or in a woman past menopause, the most important thing to rule out is hidden bleeding from the gut. A stool test or a camera test of the stomach or bowel looks for it. The doctor weighs the benefit against how well your father would manage the test.
Can anaemia cause confusion or falls in old age?
It can add to both. Less oxygen reaching the brain can worsen memory and alertness, and dizziness on standing makes falls more likely. A sudden change in confusion is different, though. It needs a same-day medical check, because infection, bleeding or a stroke must be ruled out.
Will my parent need a blood transfusion?
Most older people with anaemia do not. A transfusion is considered when the count is very low, when there are symptoms such as chest pain or breathlessness, or while the cause is being treated. The decision depends on the heart, symptoms and wishes of the person, and is made by the treating team.
Can food alone fix anaemia in the elderly?
Food helps keep iron and vitamins up, and leafy greens, pulses, eggs and meat are all useful. But food rarely corrects a count that is already low, and it does nothing for kidney or marrow causes. A poor appetite is itself worth mentioning to the doctor. Use diet alongside treatment, not instead of it.
Your Haematologist
Meet CION's haematologist. One specialist for your blood report and your plan.
Dr. Basudev Pokhrel reviews blood counts, transfusion needs and blood disorders, and works with the CION tumour board on blood cancers.
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Sources
- World Health Organization — Anaemia fact sheet
- NHS — Iron deficiency anaemia
- NHS — Vitamin B12 or folate deficiency anaemia
- National Heart, Lung, and Blood Institute — Anemia
- National Health Mission — National Health Mission
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.
Keep reading
Related pages
Unexplained Anaemia in the Elderly: The WorkupThe tests doctors use to find the causeTransfusion Decisions in Frail Older PatientsWhen a transfusion helps and when it does notWhen Not to Investigate Further in Old AgeWeighing tests against frailtyBlood Disorders in Older AdultsThe guide to blood problems in later life
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