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Hemoglobin levels and dietary iron in pubescent children in a biracial community
Insights
Low hemoglobin in Black girls after menarche may pose a health risk. Their diet is often low in iron and nutrients that help iron absorption, highlighting a need for further study and intervention.
Area of Science:
- Nutritional science
- Hematology
- Pediatric health
Background:
- Hemoglobin level differences exist between racial groups, potentially influenced by genetics.
- Low hemoglobin levels in Black girls of childbearing age may represent a significant health concern.
Purpose of the Study:
- To investigate hemoglobin levels in a biracial community's children throughout puberty and menarche.
- To assess dietary iron and nutrient intake related to iron absorption in 13-year-old Black girls.
Main Methods:
- Longitudinal tracking of hemoglobin levels before, during, and after puberty and menarche.
- Analysis of 24-hour dietary recalls for iron and related nutrient intake.
Main Results:
- Hemoglobin levels declined in Black girls post-menarche.
- This decline was associated with dietary intake marginal in iron and nutrients that promote iron absorption.
Conclusions:
- Dietary factors, particularly iron and related nutrients, play a crucial role in hemoglobin levels in Black girls post-menarche.
- Racial and genetic differences should not impede addressing this public health issue.
- Further research is needed to determine optimal dietary iron intake and its effects.
Abstract:
Although differences in hemoglobin levels between blacks and whites may be due in part to genetic influences, low hemoglobin levels in black girls of childbearing age may nevertheless constitute a health hazard. To study this problem, hemoglobin levels were examined in children of a biracial community not only before but also during and after puberty and menarche. At the same time, 24-hour dietary recalls of a representative group of 13-year-olds in the same population were examined with respect to the intake of iron and nutrients influencing iron absorption. In black girls, hemoglobin levels dropped after menarche, accompanied by a diet marginal in iron and in iron-absorption-promoting nutrients. Questions as to hemoglobin levels compatible with optimum health remain, and racial differences and genetic influences on levels should not be an excuse for failure to address this problem. More investigational studies are also needed to observe responses to an optimum dietary iron intake.