Absolute and Functional Iron Deficiency in the US, 2017-2020
Overview
Paper Summary
This cross-sectional study analyzed data from the National Health and Nutritional Examination Survey (NHANES) and found that 14% of US adults have absolute iron deficiency and 15% have functional iron deficiency. Iron supplement use was low among adults with iron deficiency, ranging from 22% to 35% in women and 12% to 18% in men, depending on age.
Explain Like I'm Five
Lots of grown-ups in the US don't have enough iron, even if they appear healthy, and many aren't taking supplements to help. This could be a hidden health problem.
Possible Conflicts of Interest
Dr. Lutsey reported receiving grants from the NIH outside of the submitted work. Dr. Buckley reported receiving speaking fees and consulting fees from organizations outside of the submitted work. No other disclosures were reported.
Identified Limitations
Rating Explanation
This study provides valuable information on the prevalence of both absolute and functional iron deficiency in a large, nationally representative sample. The limitations regarding causal inference, self-reported data, and lack of absorption data are acknowledged. However, the findings are important for public health and highlight the need for further research and improved screening strategies.
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