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Iron deficiency anaemia rarely causes serious or long-term complications, although some people with the condition find it affects their daily life.
Some common complications are outlined below.
Iron deficiency anaemia can make you feel tired and lacking in energy (lethargic). This may result in you being less productive at work, and you may find it difficult to stay awake or not feel able to exercise regularly.
Research has shown iron deficiency anaemia can affect your immune system ‐ the body's natural defence system. This increases your vulnerability to infection.
Adults with severe anaemia may be at risk of developing complications that affect their heart or lungs.
Pregnant women with severe anaemia have an increased risk of developing complications, particularly during and after birth.
They may also develop postnatal depression, which some women experience after having a baby.
Research suggests babies born to mothers who have untreated anaemia are more likely to:
Some cases of restless legs syndrome are thought to be caused by iron deficiency anaemia. Doctors often refer to this as secondary restless legs syndrome.
Restless legs syndrome is a common condition that affects the nervous system, and causes an overwhelming, irresistible urge to move the legs. It also causes an unpleasant feeling in the feet, calves and thighs.
Restless legs syndrome caused by iron deficiency anaemia can usually be treated with iron supplements.
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