Iron Deficiency Anemia: Symptoms, Causes & Treatment

Iron-deficiency anemia is a very common condition in which the number of healthy red blood cells falls because the body's iron stores are depleted. Iron is essential for making hemoglobin, the protein that carries oxygen from the lungs to the rest of the body's tissues. When iron is lacking, hemoglobin production drops and red cells become small, pale, and less able to carry oxygen.

It is the most widespread type of anemia worldwide and affects women of childbearing age, pregnant women, children, and older adults more than others. It can develop slowly, so a person may not notice symptoms at first; they then appear gradually as the deficiency worsens.

Importantly, iron deficiency is not a final diagnosis in itself but a sign of an underlying cause that must be sought, such as poor nutrition, chronic blood loss from heavy menstruation or gastrointestinal bleeding, or malabsorption. Treatment is therefore not complete by replacing iron alone but by identifying and treating the cause to prevent recurrence.

• Fatigue, general tiredness, and weakness.
• Pallor of skin, lips, and inner eyelids.
• Shortness of breath and palpitations on exertion.
• Dizziness, headache, and cold extremities.
• Brittle nails, hair loss, and craving non-food items (ice, clay).

• Low dietary iron.
• Chronic blood loss: heavy periods or gastrointestinal bleeding.
• Increased need during pregnancy, breastfeeding, and growth.
• Iron malabsorption, as in celiac disease.

• Women of childbearing age and pregnant women.
• Infants and adolescents.
• Vegetarians without good dietary planning.
• Frequent blood donors.

• Complete blood count (CBC) showing small, pale cells.
• Iron stores (ferritin) and serum iron measurement.
• Tests to find the cause such as a stool test or endoscopy when needed.

Iron replacement

• Oral iron supplements are the mainstay, often taken on an empty stomach with vitamin C to improve absorption.
• Intravenous iron when there is malabsorption, intolerance to oral iron, or severe deficiency.

Diet

• Red meat, liver, legumes, and dark leafy vegetables.
• Avoid tea and coffee with iron-rich meals as they reduce absorption.

Treating the cause

• Managing chronic bleeding or malabsorption to prevent recurrence.

This content is educational and does not replace medical advice; supplements are taken at a prescribed dose.

• Heart strain and fast heartbeat from chronic low oxygen.
• Pregnancy problems and preterm or low-birth-weight delivery.
• Delayed growth and cognition in children.
• Weakened immunity and frequent infections.

• A balanced iron-rich diet.
• Iron supplements for pregnant women as advised by the doctor.
• Treating heavy menstruation.
• Periodic screening for at-risk groups.