Why Women Are More Likely to Have Iron Deficiency

Introduction

What is Iron Deficiency and Why Does It Matter?

Why Are Women More Susceptible to Iron Deficiency?

Women are disproportionately affected by iron deficiency due to several intersecting factors: 

Biological Factors

Menstruation: Regular menstrual bleeding causes significant iron loss. On average, women lose 10–20 mg of iron per menstrual cycle, but heavy menstrual bleeding (defined as blood loss exceeding 80 ml per cycle) can dramatically increase this loss. Studies show that 18% to 50% of women experience heavy menstrual bleeding, yet it remains underdiagnosed and undertreated.

Pregnancy and Lactation: Pregnancy increases iron demand substantially—up to 500–800 mg is needed to support fetal growth, placenta development, and maternal blood volume expansion. Postpartum blood loss and breastfeeding further deplete iron stores.

Hormonal Differences: Testosterone in men promotes hemoglobin synthesis, whereas estrogen in women does not, resulting in naturally lower hemoglobin levels and iron stores in females.

Socioeconomic and Structural Factors

Access to Healthcare: Women, especially in low- and middle-income countries, often face barriers to diagnosis and treatment due to healthcare inequities.

Normalization and Stigma: Many women normalize symptoms like fatigue and heavy bleeding, delaying medical consultation. Additionally, healthcare providers sometimes underestimate or dismiss women's reports of heavy menstrual bleeding, perpetuating a cycle of underdiagnosis.

Dietary Patterns: Women following vegetarian or vegan diets without proper supplementation may have inadequate iron intake, as non-heme iron from plant sources is less bioavailable.

Recognizing Iron Deficiency in Women

• Fatigue and weakness
• Pale skin and brittle nails
• Shortness of breath and heart palpitations
• Cognitive difficulties such as poor concentration and "brain fog"
• Restless leg syndrome and mood changes

  
  

Managing Iron Deficiency in Women

Oral Iron Supplementation: First-line treatment using ferrous salts (gluconate, sulfate, fumarate). Once-daily dosing is often preferred to improve absorption and reduce side effects.

Addressing Menstrual Blood Loss: Treatments such as hormonal contraceptives, tranexamic acid, and NSAIDs can reduce heavy bleeding and iron loss.

Intravenous Iron Therapy: For women who cannot tolerate oral iron, have malabsorption issues, or require rapid repletion (e.g., severe anemia during pregnancy).

Dietary Recommendations: Incorporate heme iron-rich foods like red meat, poultry, and fish, and enhance absorption by consuming vitamin C-rich foods. Avoid inhibitors like tea, coffee, and calcium supplements around iron intake.

Conclusion