Clinical Scorecard: Inflammation Associated with Obesity Obscures Iron Deficiency in Women in the United States

At a Glance

Key Highlights

• Ferritin is an acute-phase reactant that can misrepresent iron status during inflammation.

• CRP-adjusted ferritin thresholds increase the prevalence of diagnosed iron deficiency.

• Women show a significant increase in iron deficiency prevalence with higher BMI.

• Anemia and microcytosis are more prevalent in women reclassified as iron deficient after adjustment.

• Approximately 3.6 million additional US adults classified as iron deficient post-adjustment.

Guideline-Based Recommendations

Diagnosis

• Use ferritin in conjunction with inflammation markers like CRP for accurate iron deficiency diagnosis.

Management

• Consider CRP-adjusted ferritin values in managing iron deficiency, especially in obese populations.

Monitoring & Follow-up

• Regularly assess ferritin, CRP, and complementary indicators like transferrin saturation and sTfR.

Risks

• Misclassification of iron status can lead to inadequate treatment and management of iron deficiency.

Patient & Prescribing Data

Non-pregnant adults, with a focus on women aged 20-49 years.

Iron deficiency prevalence increases significantly after adjusting ferritin for inflammation.

Clinical Best Practices

• Implement CRP correction when interpreting ferritin levels in patients with obesity.

• Utilize transferrin saturation and sTfR as complementary indicators for assessing iron status.

Related Resources & Content

• World Health Organization Recommendations