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Iron deficiency anemia is a common condition but is often overlooked because its symptoms develop silently and mildly, such as fatigue, dizziness, and difficulty concentrating signs that almost everyone has experienced. However, if ignored, this anemia can quietly reduce your quality of life, affecting your mental clarity, physical strength, and cardiovascular health.

1. What is iron deficiency anemia?

Anemia occurs when the body lacks enough healthy red blood cells to carry oxygen to tissues. Iron deficiency anemia is the most common type; it happens when the body does not have enough iron to produce hemoglobin (Hb), a protein in red blood cells that transports oxygen from the lungs to organs and tissues.

When hemoglobin levels drop, the amount of oxygen reaching tissues decreases, leaving the body in a state of low energy both physically and mentally.

2. Why does the body lack iron?

There are many causes of iron deficiency, but the most common include:

• Blood loss: Heavy menstruation, gastrointestinal bleeding (due to stomach ulcers, hemorrhoids, colon polyps, etc.), trauma, or surgery.
• Increased iron demand: Pregnant women, infants, and adolescents.
• Iron-deficient diet: Not eating enough iron-rich foods or long-term vegetarianism.
• Poor absorption: Intestinal diseases such as inflammatory bowel disease, Celiac disease, or after bowel surgery.

Additionally, some people may consume enough iron but fail to absorb it well due to long-term use of antacids, drinking tea/coffee immediately after meals, or a lack of vitamin C, a factor that aids iron absorption.

3. Symptoms of iron deficiency anemia

Not everyone with iron deficiency has obvious symptoms, especially in mild stages. However, if the condition persists, you may experience:

3.1 Persistent fatigue and exhaustion

The most common sign. Feeling tired for no reason, even after enough sleep, is the first signal you should notice.

3.2 Pale skin and pale inner eyelids

Anemia causes the skin to lose its healthy pink glow. You may notice a "dull" face, pale lips, or that the inner lining of your lower eyelid is not as red as usual.

3.3 Shortness of breath during activity

As hemoglobin levels drop, the body increases its breathing rate to compensate for the oxygen shortage. Even light activities like climbing stairs can leave you breathless.

3.4 Rapid heartbeat and palpitations

Low oxygen forces the heart to work harder. You may feel an abnormally fast heartbeat, palpitations, or slight chest pain.

3.5 Headheads, dizziness, and poor concentration

Oxygen-deprived blood affects the brain, leading to dull headaches, dizziness when standing up, or a lack of focus at work or school.

3.6 Hair loss, dry skin, and brittle nails

Iron is essential for nourishing cells, including hair, nails, and skin. Long-term deficiency leads to thinning hair, dull skin, and brittle nails. In some cases, nails may become spoon-shaped (koilonychia).

3.7 Unusual cravings (Pica syndrome)

A strange but characteristic sign is the craving for non-food items like soil, ice, paper, or chalk.

3.8 Swollen tongue, mouth sores, and cracked lips

Iron deficiency can damage the oral mucosa, causing a sore, red, or swollen tongue, and cracks at the corners of the mouth.

3.9 Cold hands and feet, numbness, and irritability

Poor circulation causes coldness or tingling in the extremities. A lack of energy for the brain can also make you feel irritable, anxious, or depressed.

4. Who is at risk?

• Women of childbearing age: Due to monthly menstrual blood loss, especially if the cycle is prolonged or the flow is heavy.
• Pregnant and postpartum women: Iron demand increases sharply to support fetal growth and blood formation.
• Infants and children: Often due to a diet lacking in sufficient iron.
• Vegetarians: Those who do not consume red meat which is the most easily absorbed source of iron.
• People with intestinal diseases causing malabsorption: Such as Celiac, Crohn's disease, etc.
• People with chronic blood loss: Due to hemorrhoids, colon polyps, stomach ulcers, or frequent blood donation.

5. Complications if left untreated

If iron deficiency anemia is not detected and treated early, it can lead to:

• Impaired immunity: Increased susceptibility to infections and slower recovery from illness.
• Reduced productivity and memory: Due to lack of oxygen to the brain.
• Pregnancy complications: Risks include premature birth, low birth weight, and delayed fetal development.
• Heart failure: Occurs when the heart has to work excessively hard over a long period.

6. How is it diagnosed?

Doctors usually order the following tests:

• Complete blood count (CBC): To evaluate the number of red blood cells, hemoglobin, hematocrit, and the quality of red blood cells.
• Serum ferritin levels: To determine the amount of stored iron in the body.
• TIBC and transferrin: To assess the body's ability to bind and transport iron.
• Fecal occult blood test or endoscopy: Recommended if gastrointestinal bleeding is suspected.

7. How is iron deficiency anemia treated?

7.1 Iron supplementation

• Oral intake: Iron tablets or syrups—best taken on an empty stomach with vitamin C to enhance absorption.
• Intravenous (IV) iron: Used if the patient cannot tolerate oral iron or if the deficiency is severe.

7.2 Dietary adjustments:

You should increase the intake of the following iron-rich foods:

• Heme iron (easily absorbed): Beef, liver, eggs, and seafood.
• Non-heme iron (more difficult to absorb): Dark leafy greens, beans, pumpkin seeds, and whole grains.
• Eat iron-rich foods along with those high in vitamin C, such as oranges, grapefruits, and guavas, to boost absorption.
• Limit tea, coffee, and milk near mealtimes, as they can reduce iron absorption.

7.3 Treating the underlying cause.

Such as surgery to remove colon polyps, treating uterine fibroids, or managing prolonged menstrual cycles.

8. Prevention

• Maintain a balanced diet and supplement iron through daily meals.
• Supplement iron when necessary: pregnant women and young children should take iron as prescribed by a doctor.
• Have regular health check-ups, especially if you fall into a high-risk group.
• Do not self-medicate with iron supplements for long periods: an iron overdose can harm the liver and cause nausea or constipation.

9. Useful notes

• Recovery time after starting iron supplements: ranges from a few weeks to several months, depending on the severity of the deficiency.
• After treatment, a maintenance dose may be needed to fully replenish iron stores.
• Always consult a doctor before using any iron medication, especially if you have liver disease, cardiovascular issues, or absorption disorders.

Conclusion

Iron deficiency anemia is not an incurable disease, but it can have serious effects if taken lightly. Listening to your body from small signs like fatigue and pale skin to more severe symptoms like shortness of breath and rapid heartbeat that can help you recognize the problem early and receive timely treatment.

Proactively care for your health by eating well, supplementing iron appropriately, and having regular check-ups. A body full of energy starts with healthy blood cells!

To schedule iron deficiency anemia screening and treatment at DYM Medical Center Vietnam, please contact:

• DYM Medical Center Saigon: Room B101-B103, Basement 1, mPlaza Saigon Building, No. 39 Le Duan, Sai Gon Ward, Ho Chi Minh City

• DYM Medical Center Phu My Hung: Room 3A01, 3A Floor, The Grace Building, 71 Hoang Van Thai Street, Tan My Ward, Ho Chi Minh City

• DYM Medical Center Hanoi: B1 Basement, Epic Tower, Alley 19 Duy Tan, Cau Giay Ward, Ha Noi

• Hotline: 1900 29 29 37