![Iron deficiency anaemia. Computer illustration showing blood of a patient after hemotransfusion. Normal red blood cells are seen together with hypochromic (stain poorly) and microcytic (small) red blood cells. A small lymphocyte Iron deficiency anaemia. Computer illustration showing blood of a patient after hemotransfusion. Normal red blood cells are seen together with hypochromic (stain poorly) and microcytic (small) red blood cells. A small lymphocyte](https://c8.alamy.com/comp/RDPCE1/iron-deficiency-anaemia-computer-illustration-showing-blood-of-a-patient-after-hemotransfusion-normal-red-blood-cells-are-seen-together-with-hypochromic-stain-poorly-and-microcytic-small-red-blood-cells-a-small-lymphocyte-is-drawn-for-size-comparison-this-is-the-most-common-form-of-anaemia-worldwide-it-is-caused-by-a-deficiency-of-iron-an-essential-component-of-the-blood-pigment-haemoglobin-symptoms-include-tired-ness-dizziness-and-pale-skin-treatment-for-severe-iron-deficiency-anaemia-is-transfusion-of-blood-RDPCE1.jpg)
Iron deficiency anaemia. Computer illustration showing blood of a patient after hemotransfusion. Normal red blood cells are seen together with hypochromic (stain poorly) and microcytic (small) red blood cells. A small lymphocyte
National Heart, Lung, and Blood Institute (NHLBI) - Anemia, also known as iron-poor blood, low blood, or tired blood, is caused when your body does not get enough oxygen-rich blood. Learn how
![Iron deficiency anaemia. Computer illustration showing blood of a patient after hemotransfusion. Normal red blood cells are seen together with hypochromic (stain poorly) and microcytic (small) red blood cells. A small lymphocyte Iron deficiency anaemia. Computer illustration showing blood of a patient after hemotransfusion. Normal red blood cells are seen together with hypochromic (stain poorly) and microcytic (small) red blood cells. A small lymphocyte](https://l450v.alamy.com/450v/rdpcdx/iron-deficiency-anaemia-computer-illustration-showing-blood-of-a-patient-after-hemotransfusion-normal-red-blood-cells-are-seen-together-with-hypochromic-stain-poorly-and-microcytic-small-red-blood-cells-a-small-lymphocyte-is-drawn-for-size-comparison-this-is-the-most-common-form-of-anaemia-worldwide-it-is-caused-by-a-deficiency-of-iron-an-essential-component-of-the-blood-pigment-haemoglobin-symptoms-include-tired-ness-dizziness-and-pale-skin-treatment-for-severe-iron-deficiency-anaemia-is-transfusion-of-blood-rdpcdx.jpg)