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Vitamin A deficiency and anemia in Central American children
Insights
Vitamin A nutriture plays a role in anemia prevalence among Central American children. Low vitamin A levels correlate with lower hemoglobin and iron, especially in older children.
Area of Science:
- Nutrition Science
- Public Health
- Biochemistry
Background:
- Anemia is a significant public health concern in Central America.
- Vitamin A deficiency is also prevalent in the region.
- The interplay between vitamin A and iron metabolism in anemia is not fully understood.
Purpose of the Study:
- To investigate the association between vitamin A status and anemia in Central American children.
- To explore correlations between plasma retinol levels and various anemia indicators.
Main Methods:
- Retrospective analysis of data from six nutrition surveys in Central America.
- Inclusion of children aged 1-12 years, stratified by age group and altitude.
- Correlation analysis of plasma retinol with hemoglobin, serum iron, and transferrin saturation.
Main Results:
- A significant positive correlation was observed between hemoglobin and plasma retinol in children aged 5-12 years.
- All age groups showed a positive correlation between plasma retinol and serum iron.
- Lower plasma retinol levels were associated with reduced transferrin saturation.
- Adequate dietary iron intake strengthened the correlation between plasma retinol and serum iron.
Conclusions:
- Vitamin A nutriture may influence anemia prevalence in Central American children.
- Vitamin A deficiency could be a contributing factor to anemia, particularly when iron intake is adequate.
- Further research is warranted to elucidate the mechanisms linking vitamin A and anemia.
Abstract:
In order to investigate the role of vitamin A nutriture in the prevalence of anemia in Central America, a retrospective evaluation of the data of the six Institute of Nutrition of Central Americal and Panama/Office for International Research nutrition surveys of Central America and Panama has been made. Three groups of children; 1 to 4, 5 to 8, and 9 to 12 years old, living between 0 and 2,5000 feet above sea level were studeid. Several biochemical and dietary parameters related to anemia were corrleated with plasma levels of retinol. Children between the ages of 5 and 12 years showed a significant positive correlation between hemoglobin and plasma retinol. Children aged 1 to 4 years did not show a similar correlation. In children of all age groups there were positive correlations between plasma retinol and serum iron. Percent saturation of transferrin was also found to be lower when plasma retinol levels were low. Children with an adequate intake of iron, as classified by both dietary information and socioeconomic level, showed a significant positive correlation between plasma retinol levels and iron in their serum. In contrast, no correlation was found when dietary iron was low. In the light of these findings, a possible relationship between vitamin A deficiency and anemia is suggested.