Iron is essential for making red blood cells, which carry oxygen around our bodies.
A lack of iron can lead to iron deficiency anaemia.
Common symptoms of this include tiredness, a lack of energy and pale skin.
READ MORE: Vitamin B12 deficiency: Symptoms and warning signs in your mouth that suggest low levels
But there are some less frequently occurring signs that could be caused by anaemia.
Three signs that show up in your mouth can suggest you are lacking the nutrient.
Food tasting strange could be a symptom of iron deficiency anaemia - according to NHS guidance.
Mouth ulcers are also a potential sign, and a sore tongue could also suggest your iron levels are low.
Anyone who thinks they may be anaemic is advised to see their GP, and a simple blood test will confirm if you're anaemic or not.
NHS guidance says: "The GP will ask you about your lifestyle and medical history.
"If the reason for the anaemia is not clear, they might order some tests to find out what might be causing the symptoms.
"They might also refer you to a specialist for further checks."
If the blood test shows your red blood cell count is low, you'll be prescribed iron tablets to replace the iron that's missing from your body.
How to consume more iron in your diet
The following foods and drinks are recommended to boost your iron intake:
- dark-green leafy vegetables like watercress and curly kale
- cereals and bread with extra iron in them (fortified)
- meat
- dried fruit like apricots, prunes and raisins
- pulses (beans, peas and lentils)
Reducing these foods and drinks can also help:
- tea
- coffee
- milk and dairy
- foods with high levels of phytic acid, such as wholegrain cereals, which can stop your body absorbing iron from other foods and pills
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