Anaemia: Why You Might Feel Tired, Weak, and Pale
Constant tiredness, weakness, breathlessness, or looking pale? Anaemia is very common — especially in India — and often treatable. A clear guide to what anaemia is, its causes, and when to see a doctor.
Feeling constantly tired, weak, breathless on mild exertion, or looking paler than usual? These can be signs of anaemia — one of the most common health problems in the world, and especially widespread in India. The good news is that anaemia is usually very treatable once the cause is found. This is a clear, plain-language guide to what anaemia is, why it happens, and when to get it checked.
What Is Anaemia?
Your blood carries oxygen around the body using red blood cells, which contain a protein called haemoglobin. Anaemia means you have too little haemoglobin (or too few red cells) — so your body gets less oxygen than it needs. That is why the classic symptoms are about your body running "low on fuel": tiredness, weakness, and breathlessness. It is not a disease in itself but a sign that something needs attention.
Common Symptoms
- Persistent tiredness and weakness (the most common sign)
- Pale skin, lips, or inner eyelids
- Breathlessness or a racing heart on mild activity
- Dizziness, headaches, or difficulty concentrating
- Brittle nails, hair fall, or (with iron deficiency) unusual cravings for non-food items like ice or mud
Why Anaemia Happens
There are many causes, but the common ones fall into a few groups:
- Iron deficiency — the most common cause worldwide; from poor iron intake, heavy periods, pregnancy, or blood loss (see our iron-deficiency guide)
- Vitamin deficiency — low vitamin B12 or folate (see our B12 guide)
- Blood loss — heavy periods, or slow bleeding from the gut (e.g. ulcers, piles) — which can be hidden
- Chronic conditions — long-term illness, kidney disease, or thyroid problems
- Certain inherited conditions affecting red blood cells
How It's Diagnosed and Treated
Anaemia is confirmed with a simple blood test (a complete blood count checks your haemoglobin). If found, your doctor looks for the cause and treats accordingly — for example iron or vitamin supplements, dietary changes, treating an underlying condition, or addressing a source of bleeding. Treatment depends entirely on the cause, which is why diagnosis matters. Most people improve well once the right cause is treated. (See our guide on understanding your blood test report.)
Eating for Healthy Blood
- Iron-rich foods — leafy greens, legumes, jaggery, and (for non-vegetarians) meat/fish
- Vitamin C with meals (lemon, amla, citrus) helps the body absorb iron from plant foods
- B12 and folate — dairy, eggs, and green vegetables; strict vegetarians/vegans may need B12 attention
- Do not rely on diet alone if you are already anaemic — see a doctor for the right treatment
When to See a Doctor
See a doctor if you have ongoing tiredness, weakness, breathlessness, or paleness — do not just write it off as "normal" busyness, as anaemia is common and easily checked. Seek prompt help for severe symptoms like significant breathlessness, chest pain, or fainting. Anaemia in pregnancy, or with heavy periods or any unexplained bleeding, particularly needs review. An online consultation is a good place to describe your symptoms, arrange the right blood test, and understand your results. Finding and fixing the cause usually restores your energy. (See our guides on iron-deficiency anaemia, vitamin B12 deficiency, and fatigue.)