Iron Deficiency Anemia: Causes, Symptoms, Diagnosis & Treatment

Iron Deficiency Anemia (IDA) is the most common type of anemia worldwide. It occurs when the body lacks enough iron to produce hemoglobin, the protein in red blood cells that carries oxygen. As a result, tissues receive less oxygen, leading to fatigue and other systemic symptoms.

Early identification and treatment are essential to prevent complications and improve quality of life.

 What Is Iron Deficiency Anemia?

Iron is a key component of hemoglobin.
When iron stores are depleted:

• Hemoglobin production decreases

• Red blood cells become small and pale

• Oxygen delivery to organs reduces

This leads to anemia and its associated symptoms.

 Common Causes of Iron Deficiency

🔹 Inadequate Iron Intake

• Poor diet lacking iron-rich foods

• Vegetarian diets without proper planning

• Malnutrition

🔹 Increased Iron Requirement

Situation

Reason

Pregnancy

Increased maternal & fetal demand

Adolescence

Rapid growth

Infancy

Low iron stores

🔹 Blood Loss (Most Common Cause in Adults)

• Heavy menstrual bleeding

• Gastrointestinal bleeding (ulcers, hemorrhoids, cancers)

• Hookworm infestation

• Repeated blood donation

🔹 Poor Iron Absorption

• Celiac disease

• Chronic gastritis

• Post-gastrectomy

• Long-term antacid or PPI use

 Symptoms of Iron Deficiency Anemia

Common Symptoms

• Fatigue and weakness

• Pale skin

• Shortness of breath on exertion

• Dizziness or headache

• Palpitations

• Cold intolerance

Specific Features of Iron Deficiency

• Brittle nails

• Hair loss

• Glossitis (smooth, sore tongue)

• Angular stomatitis (cracks at mouth corners)

• Pica (craving for ice, clay, starch)

 Severe Anemia Warning Signs

• Chest pain

• Fainting

• Severe breathlessness

• Confusion

 Diagnosis

Blood Tests

• Low hemoglobin (Hb)

• Low mean corpuscular volume (MCV)

• Low serum ferritin (best indicator of iron stores)

• Low serum iron

• Increased total iron binding capacity (TIBC)

• Peripheral smear: microcytic, hypochromic anemia

Identify the Cause

• Stool test for occult blood

• GI evaluation if bleeding suspected

• Gynecological evaluation in women

• Screening for malabsorption disorders

 Treatment & Management

1️⃣ Iron Supplementation

Form

Use

1.Oral iron tablets/syrup

First-line treatment

2.Intravenous iron

Poor absorption or intolerance

3.Blood transfusion

Severe or life-threatening anemia

 Iron therapy is usually continued for 3–6 months after hemoglobin normalizes to replenish iron stores.

2️⃣ Treat the Underlying Cause

• Control menstrual bleeding

• Treat gastrointestinal bleeding

• Deworming if required

• Manage malabsorption disorders

 Dietary Management

Iron-Rich Foods

Source

Examples

Plant-based

Spinach, legumes, dates, jaggery, ragi

Animal-based

Red meat, liver, eggs

Fortified foods

Cereals, flours

Improve Iron Absorption

• Take iron with vitamin C (lemon, orange)

• Avoid tea/coffee 1–2 hours around iron intake

• Avoid calcium supplements with iron

 Complications if Untreated

• Reduced work capacity

• Impaired immunity

• Poor pregnancy outcomes

• Delayed growth and development in children

• Worsening heart disease

• Cognitive impairment

 Prevention

• Balanced diet with adequate iron

• Iron supplementation in pregnancy

• Regular screening in high-risk groups

• Treat chronic blood loss early

• Deworming programs in endemic areas

 When to Consult a Doctor

• Persistent fatigue or weakness
  
  

• Pale skin or breathlessness
  
  

• Heavy menstrual bleeding

Disclaimer:

The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified physician or other licensed healthcare provider with any questions you may have regarding a medical condition. Do not ignore or delay seeking medical advice because of information you read on this website. The use of any information provided here is solely at your own risk.