Inflammation Associated with Obesity Obscures Iron Deficiency in Women

Overview

This study reveals that adjusting ferritin levels for inflammation significantly increases the prevalence of iron deficiency among women in the U.S., particularly those with higher body mass index (BMI).

Background

Iron deficiency is a common nutritional deficiency that can lead to anemia and other health issues. Accurate assessment of iron status is crucial, especially in populations with chronic inflammation, such as those with obesity. The World Health Organization recommends interpreting ferritin levels alongside inflammation markers.

Data Highlights

Key Findings

• Ferritin levels increased with inflammation, complicating the diagnosis of iron deficiency.
• After adjusting for inflammation, iron deficiency prevalence among women rose from 7.78% to 10.70%.
• The overall population's prevalence of iron deficiency increased from 4.50% to 6.07% after adjustment.
• Women with higher BMI categories showed a greater increase in iron deficiency prevalence compared to those with lower BMI.
• Red cell indices indicated iron restriction among women reclassified by inflammation adjustment.

Clinical Implications

Clinicians should consider the impact of inflammation on ferritin levels when diagnosing iron deficiency, particularly in women with obesity.

Conclusion

The study highlights the need to account for inflammation in the assessment of iron deficiency among women with obesity.

Related Resources & Content

1. The Journal of Clinical Endocrinology & Metabolism, 2023 -- Association Between Iron Levels and Insulin Resistance in US Adults: Insights from a Nationwide Population Study
2. MDSpire News, 2023 -- Iron Deficiency Guidance Varies in Premenopausal Women
3. Obesity Surgery, 2023 -- Impaired Iron-Copper Metabolic Axis in Human Intestinal Mucosa After Roux-en-Y Gastric Bypass: A Prospective Transcriptomic Study Using Double-Balloon Enteroscopy
4. American Journal of Hematology, 2023 -- Distribution of Gastrointestinal and Dietary Risk Factors Among U.S. Adults Classified as Having Iron Deficiency Anemia Across Diagnostic Thresholds
5. EXECUTIVE SUMMARY - WHO guideline on use of ferritin concentrations to assess iron status in individuals and populations, 2023
6. Iron deficiency prevalence increased in women of reproductive age with differences noted by race and Hispanic origin group, 2023
7. Obesity and Iron Metabolism: Mechanisms, Status Assessment, and Clinical Implications | Current Obesity Reports, 2023
8. EXECUTIVE SUMMARY - WHO guideline on use of ferritin concentrations to assess iron status in individuals and populations - NCBI Bookshelf
9. Iron deficiency prevalence increased in women of reproductive age with differences noted by race and Hispanic origin group
10. Obesity and Iron Metabolism: Mechanisms, Status Assessment, and Clinical Implications | Current Obesity Reports | Springer Nature Link