Iron deficiency anaemia happens when your body doesn’t have enough iron to make the right amount of haemoglobin—a protein in red blood cells that carries oxygen throughout the body. Without enough haemoglobin, your organs and tissues don’t get the oxygen they need, which can lead to noticeable health problems. In the early stages, you might not even realise something is wrong. But as the condition worsens, symptoms like constant tiredness and brittle nails can appear. Recognising these warnin...