Iron deficiency anaemia is caused by a lack of iron. This can be caused by blood loss or pregnancy and can lead to tiredness, loss of breath, heart palpitations and noticeably pale skin. Most people should be able to get all the iron they need from a healthy diet, eating iron-rich foods such as wholegrains, kale, beans, nuts and liver.
There is evidence that it is possible to increase iron levels by consuming slow-fermented wholegrain sourdough. This is due to increased bioavailability of minerals through fermentation. Iron tablets are also prescribed by GPs in some cases of anaemia.