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Iron status and dietary intakes of iron in normal-weight and obese young Mexican women.

Authors: Alexandra Tijerina-Sáenz; Nancy E. Martínez-Garza; Erik Ramírez-López; Elizabeth Solís-Pérez; Adbel Z. Martínez-Báez;

Iron status and dietary intakes of iron in normal-weight and obese young Mexican women.

Abstract

Introducción: la obesidad se ha reportado como predictor de la deficiencia de hierro. En México, el 45,5% de las mujeres mayores de 20 años tienen obesidad, y la prevalencia de anemia es de 10,2% en mujeres de 20 a 29 años. Objetivo: investigar la relación entre índice de masa corporal (IMC), porcentaje de grasa (%GC), ingesta dietética y reservas de hierro en mujeres jóvenes sanas con normopeso y obesidad. Métodos: ochenta y seis mujeres [normopeso (n = 46) y obesidad (n = 40)] completaron el estudio. La ingesta fue evaluada por un diario de registro de 8 días. La antropometría y obtención de sangre (hemoglobina, hematocrito, ferritina y transferrina) se consiguieron en la fase lútea del ciclo menstrual; se reportaron las características de la menstruación. Las reservas de hierro se determinaron según etapas de depleción. Pruebas de T y Mann-Whitney U se usaron para comparar variables entre grupos. La correlación de Pearson se usó para determinar relaciones entre variables. La razón de momios se utilizó para medir la asociación de IMC, %GC e ingesta dietética con las reservas de hierro. Resultados: los marcadores de hierro fueron similares entre grupos. Se encontró una relación positiva entre %GC y ferritina (r = 0,222; p = 0,032). La similitud en ingesta y periodos menstruales puede ser la razón de que existan reservas de hierro similares. El IMC, %GC e ingesta dietética no contribuyeron independientemente a las etapas de depleción de hierro. Conclusión: se sugiere guía dietética para esta población con el fin de evitar complicaciones por deficiencia de hierro.

Introduction: obesity is reported to be a predictor of iron deficiency. In Mexico, 45.5 % of women older than 20 years have obesity, and the prevalence of anemia is 10.2 % in women 20 to 29 years. Objective: to investigate the relation between body mass index (BMI), percentage of body fat (% BF), dietary intakes and iron status of healthy normal-weight and obese young women. Methods: a total of 86 women [normal-weight (n = 46) and obese (n = 40)] completed the study. Intakes were evaluated by an 8-day food-record. Anthropometrics and blood collection (hemoglobin, hematocrit, ferritin and transferrin) were done on the luteal phase of menstrual cycle; menstrual characteristics were also reported. Iron status was determined according to stages of iron depletion. T-test and Mann-Whitney U test were used to compare groups' variables. Pearson correlation was used to determine relationships between variables. An odds ratio (OR) analysis was used to measure the association of BMI, % BF and dietary intakes with iron status. Results: biomarkers of iron were similar between groups. There was a positive correlation between % BF and ferritin (r = 0.222; p = 0.032). Similar intakes and menstrual periods may be the reason of similar iron status. BMI, % BF or dietary intakes were not independent contributors to stages of iron depletion. Conclusion: guidance on dietary intakes is suggested for this population to avoid future iron deficiency complications.

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Keywords

Adult, Medicina, Iron, Obesidad, Nutritional Status, Body Mass Index, Young Adult, Reservas de hierro, Pregnancy, Humans, Women, Obesity, Prospective Studies, Mexico, Adiposity, Anemia, Iron-Deficiency, Iron status, Dietary intake, Mujeres, Diet, Ingesta dietética, Body fat, Case-Control Studies, Ferritins, Grasa corporal, Female, Iron, Dietary

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    popularity
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    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
10
Top 10%
Average
Average
Green
gold