Many people with iron deficiency anaemia will only have a few signs or symptoms.
The severity of these symptoms largely depends on how quickly your anaemia develops. You may only notice few symptoms or they may develop gradually if your anaemia is caused by a long-term problem, such as a stomach ulcer.
The most common symptoms include:
tiredness and lethargy (lack of energy)
shortness of breath
heart palpitations (noticeable heartbeats)
a pale complexion