Anaemia: iron deficiency and fatigue in Luxembourg

Anaemia is a shortage of red blood cells or of the haemoglobin they carry, which means the blood delivers less oxygen to the body. Its most frequent cause worldwide is iron deficiency. The typical result is fatigue, breathlessness on effort and paleness. In Luxembourg, your general practitioner is the right person to see: a standard blood test confirms anaemia, and the GP then leads the essential second step — finding out why it happened.

What your body is telling you

Red blood cells are the body’s oxygen delivery service. When there are too few of them, every organ receives less fuel, and the body compensates as best it can: the heart beats faster, breathing deepens, effort becomes costly. That is why the symptoms of anaemia are so general.

Fatigue comes first — not tiredness after a hard week, but a persistent lack of energy that no weekend repairs. Then breathlessness: climbing stairs that never used to be a problem, needing to pause during activities that were once automatic. Paleness of the skin, and more reliably of the inside of the eyelids or the lips, is the sign others may notice before you do. Some people experience a racing heart, dizziness on standing, headaches, cold hands and feet, or brittle nails and hair loss when iron is the culprit. A few develop curious cravings for ice or other non-food substances, a well-known quirk of iron deficiency.

Anaemia often develops slowly, and the body adapts along the way. People can lose a surprising amount of their red blood cell count over months and attribute the decline to stress, age or being out of shape. This is precisely why a symptom as banal as lasting fatigue deserves a blood test rather than a shrug.

The blood test that answers

The diagnosis could hardly be simpler: a routine full blood count, taken at any laboratory with a prescription from your doctor, measures haemoglobin and says clearly whether you are anaemic. Alongside it, your GP will usually check ferritin, which reflects the body’s iron stores, and a few related markers. Together these results tell two things at once: whether anaemia is present, and what type it is — iron deficiency being the most common, but not the only one. Shortages of certain vitamins, chronic inflammation, kidney disease and blood disorders can also lower the count, and each points down a different path.

Finding the cause is the real work

Here is the point doctors insist on, and rightly so: iron deficiency is a finding, not a final diagnosis. Iron does not simply evaporate. If the body is short of it, there is a reason, and identifying that reason matters as much as topping up the stores. There is no cause for alarm in this — the explanation is usually straightforward — but it should always be looked for. The usual suspects fall into three groups:

• Blood loss through heavy periods. By far the most common cause in women of childbearing age. Many women have never been told their periods are heavier than average and consider them normal; a conversation with the GP or a gynaecologist can settle it and open treatment options.
• Insufficient intake or absorption. Diets low in iron-rich foods, restrictive eating, pregnancy and breastfeeding (which raise needs), or digestive conditions that impair absorption, such as coeliac disease.
• Hidden digestive bleeding. Slow, invisible blood loss from the stomach or bowel — ulcers, polyps, or occasionally something more serious. This is why, particularly in men and in women past menopause, doctors often recommend examining the digestive tract when iron deficiency appears without an obvious explanation. It is a routine precaution, and most examinations find a benign cause.

Who to see in Luxembourg, and when

Start with your general practitioner: prescription for the blood test, interpretation, treatment, and referral if the cause needs a specialist — typically a gynaecologist for heavy periods or a gastroenterologist for the digestive tract. Appointments can be booked through Doctipro. Consultations, laboratory tests and prescribed examinations are reimbursed by the national health fund (CNS) under the usual rules; see cns.lu for practical details.

Most anaemia is not an emergency. But severe breathlessness at rest, chest pain, fainting, or visible bleeding — black stools, vomiting blood — call for immediate care: contact a doctor without delay or call 112.

Correcting the deficiency

When iron deficiency is confirmed, treatment rests on restoring iron stores, usually with oral iron supplements over several weeks to months, sometimes by infusion when tablets are poorly tolerated or absorption is the problem — always alongside treatment of the underlying cause. Diet helps maintain stores once refilled: meat, fish, pulses and green vegetables all contribute, and vitamin C improves absorption. What diet alone rarely does is correct an established deficiency, so supplements should not be abandoned early just because energy returns. A follow-up blood test confirms the job is done — both the haemoglobin and the stores behind it.