Are Women Getting Enough Iron during Pregnancy?

Iron deficiency anaemia is the most common nutritional deficiency in pregnancy globally — and India has one of the highest rates of anaemia in pregnant women in the world. Approximately 50% of pregnant women in India are anaemic, with iron deficiency being the leading cause. The consequences for mother and baby can be serious — yet iron deficiency in pregnancy is largely preventable with appropriate screening, supplementation, and dietary intervention.

Why Iron Is Critical During Pregnancy

During pregnancy, blood volume increases by approximately 50% to support the growing baby. This dramatic expansion requires a corresponding increase in iron — the mineral essential for haemoglobin production. The recommended daily iron intake during pregnancy is 27 mg — nearly double the non-pregnant requirement. Additionally, the developing baby draws iron from the mother's stores for its own blood production and brain development.

Consequences of Iron Deficiency in Pregnancy

For the Mother

• Fatigue, weakness, and reduced exercise tolerance
• Increased risk of infection (iron is essential for immune function)
• Increased risk of postpartum haemorrhage complications
• Impaired cognitive function and mood disturbances
• Increased risk of preterm labour

For the Baby

• Low birth weight
• Preterm birth
• Impaired brain development (iron is critical for myelination and neurotransmitter synthesis)
• Reduced iron stores at birth, increasing the baby's risk of iron deficiency in infancy

The Genetic Component of Iron Absorption

Not all women absorb iron equally — and genetics plays a significant role. Variants in the HFE gene (associated with haemochromatosis) affect iron absorption regulation. Variants in TMPRSS6 affect hepcidin production — the master regulator of iron absorption. Women with certain genetic variants may absorb iron less efficiently, requiring higher dietary intake or supplementation to maintain adequate iron status during pregnancy.

Conversely, women with HFE variants associated with haemochromatosis may absorb iron too efficiently — making high-dose iron supplementation potentially harmful. Understanding your genetic iron metabolism profile allows for more personalized supplementation recommendations.

Dietary Sources of Iron

Haem Iron (Better Absorbed)

• Red meat (beef, lamb)
• Poultry (chicken, turkey)
• Fish and seafood

Non-Haem Iron (Plant Sources)

• Legumes (lentils, chickpeas, rajma)
• Dark leafy greens (spinach, methi)
• Fortified cereals and grains
• Dried fruits (raisins, apricots)
• Seeds (pumpkin seeds, sesame)

Tip: Consuming vitamin C-rich foods (citrus, amla, bell peppers) with non-haem iron sources significantly enhances absorption. Avoid tea and coffee with iron-rich meals — tannins inhibit iron absorption.

FAQs

Should all pregnant women take iron supplements?

In India, iron supplementation is recommended for all pregnant women due to the high prevalence of iron deficiency. The dose should be guided by haemoglobin levels and serum ferritin. Women with genetic variants affecting iron metabolism may need personalized supplementation guidance.

How is iron deficiency anaemia diagnosed in pregnancy?

A full blood count (haemoglobin, MCV, MCH) and serum ferritin are the key tests. Ferritin is the most sensitive marker of iron stores and should be checked early in pregnancy to identify deficiency before anaemia develops.