Feeling tired all the time is one of the most common reasons people see a doctor, and low iron is one of the most common causes. This guide explains what iron deficiency is, how it is diagnosed and treated, and when to get checked.<\/p>\n\n
Iron helps your body make haemoglobin, the protein in red blood cells that carries oxygen around the body. When iron stores run low, the body eventually cannot make enough haemoglobin. This is called iron-deficiency anaemia. It is possible to have low iron stores before anaemia develops.<\/p>\n\n
Iron deficiency is diagnosed with blood tests. A full blood count shows whether you have anaemia, and ferritin shows how much iron your body has stored. Depending on your history, your doctor may also check vitamin B12 and folate, and arrange tests that look for a cause, such as coeliac screening or stool tests.<\/p>\n\n
Treatment usually involves iron tablets or liquid, taken for several months to rebuild your stores. Some people cannot tolerate tablets or need a faster response, and iron can then be given through a drip in hospital. Your doctor will also look for and treat the underlying cause.<\/p>\n
Iron tablets can cause stomach upset or constipation. Avoid taking them at the same time as tea, coffee or calcium supplements, which can reduce absorption, and ask your doctor about the best way to take them.<\/p>\n\n
Iron-rich foods include red meat, poultry, fish, beans, lentils, tofu, dark green leafy vegetables and fortified cereals. A balanced diet helps maintain healthy levels, but once you are deficient, supplements are often needed as well.<\/p>\n\n