RESUMEN
Iron deficiency is the most prevalent nutritional deficiency affecting children and adolescents worldwide. A consistent body of epidemiological data demonstrates an increased incidence of iron deficiency at three timepoints: in the neonatal period, in preschool children, and in adolescents, where it particularly affects females.Conclusion: This narrative review focuses on the most suggestive symptoms of iron deficiency in childhood, describes the diagnostic procedures in situations with or without anemia, and provides Swiss expert-based management recommendations for the pediatric context.What is Known:⢠Iron deficiency (ID) is one of the most common challenges faced by pediatricians.⢠Significant progress in the diagnosis and therapy of ID has been made over the last decade.What is New:⢠Our expert panel provides ID management recommendations based on the best available evidence.⢠They include strategies for ID diagnosis and therapy, both oral and intravenous.
Asunto(s)
Anemia Ferropénica , Hierro , Administración Intravenosa/efectos adversos , Administración Oral , Adolescente , Anemia Ferropénica/sangre , Anemia Ferropénica/diagnóstico , Anemia Ferropénica/fisiopatología , Anemia Ferropénica/terapia , Niño , Preescolar , Consenso , Compuestos Férricos/administración & dosificación , Compuestos Férricos/efectos adversos , Compuestos Férricos/economía , Ferritinas/sangre , Humanos , Lactante , Recién Nacido , Hierro/sangre , Deficiencias de Hierro , Hierro de la Dieta/normas , Pediatría/métodos , SuizaRESUMEN
The first two years of life is a period of rapid growth and development. During this time a lack of key nutrients, including iron, can have long-lasting effects on motor and cognitive performance. The purpose of this cross-sectional study was to determine intake and sources of iron in a cohort of 828 toddlers (mean age; 13.1 mo) participating in the Adelaide-based Study of Mothers' and Infants' Life Events affecting oral health (SMILE), and to identify determinants of iron intake. At approximately 12 months of age, 3 non-consecutive days of dietary intake data were collected using a 24-h recall and 2-days food record. The Multiple Source Method was used to combine data from the 24-h recall and each day of the food record to estimate usual iron intake and descriptive statistics were used to report sources of iron. Linear regression was used to identify associations between iron intake and non-dietary determinants (maternal age, education, country of birth, BMI, socioeconomic position, parity, toddler sex) and primary milk feeding method at 12 months. The mean intake of iron was 7.0 (95% CI 6.7â»7.2) mg/day and 18.2% of children had usual intakes below the estimated average requirement of 4 mg/day. The main sources of iron included infant and toddler cereals and formulas. Milk feeding method and parity were significantly associated with iron intake. Toddlers with siblings and those who received breast milk as their primary milk feed had significantly lower iron intakes than only children and those who received formula, respectively. The Australian Infant Feeding Guidelines promote the importance of iron-iron-rich complementary foods such as meat and meat alternatives. However, low intakes of this food group suggest that parents do not recognize the importance of these foods or understand the specific foods that toddlers should be eating.
Asunto(s)
Fenómenos Fisiológicos Nutricionales del Lactante , Hierro de la Dieta/análisis , Adulto , Australia/epidemiología , Estudios de Cohortes , Estudios Transversales , Dieta , Femenino , Humanos , Lactante , Deficiencias de Hierro , Hierro de la Dieta/normas , Masculino , Madres , Factores de RiesgoRESUMEN
OBJECTIVE: To assess the nutritional quality of prepared foods available to primary-school children. DESIGN: Prepared foods available in a public and private school were sampled daily for 4 weeks (a total of forty-five samples) and chemically analysed for protein, fat, carbohydrate, iron, salt and sodium. The results were compared to the nutritional standards for children aged 7-10 years. SETTING: Alfenas, south-eastern Brazil. RESULTS: The concentration of protein, lipid, iron and sodium and the energy values of the foods at the private school were significantly higher than those at the public school. No differences were seen in the carbohydrate and salt values. The range of macronutrients was more balanced at the public school in relation to fat and protein. Foods at the private school were, in general, energy-dense. At both the public and private school, they provided the minimum energy and iron. Salt content was over twice the maximum amount, and that for sodium was over three times the amount, in both the public and private school. CONCLUSIONS: Overall, foods prepared at the public school were better nutritional quality than those at the private school and those offered in public schools in some developed countries. This finding can probably be explained by the fact that a nutritionist, as required by law, was responsible for planning the menus at the public school. However, corrective action is needed to adjust for the wide variability in energy and nutrient content during weekdays and in the sodium content of prepared foods available in both the public and private school.
Asunto(s)
Comida Rápida/análisis , Comida Rápida/normas , Sector Privado , Sector Público , Instituciones Académicas , Brasil , Niño , Carbohidratos de la Dieta/análisis , Carbohidratos de la Dieta/normas , Grasas de la Dieta/análisis , Grasas de la Dieta/normas , Proteínas en la Dieta/análisis , Proteínas en la Dieta/normas , Ingestión de Energía , Comida Rápida/estadística & datos numéricos , Servicios de Alimentación , Humanos , Hierro de la Dieta/análisis , Hierro de la Dieta/normas , Encuestas Nutricionales , Valor Nutritivo , Cloruro de Sodio Dietético/análisis , Cloruro de Sodio Dietético/normas , Sodio en la Dieta/análisis , Sodio en la Dieta/normasRESUMEN
A systematic review was conducted to identify studies assessing the effect of food fortification with iron on childhood anemia. The MEDLINE, LILACS, and PubMed databases and WHO and PAHO sites were searched with no time limitation, including articles published in Portuguese, English, or Spanish, using the following key words and their combination: food fortification, iron, effectiveness, efficacy, anemia, flour, staple foods, interventions, and children. Of 21 studies reviewed, only one failed to report a positive, favorable effect of iron fortification, indicating the possibility of publication bias. The studies showed important methodological limitations. The two studies with the best methodological scores showed opposite results, highlighting the need for larger trials with better planning to explore this hypothesis.
Asunto(s)
Anemia Ferropénica/dietoterapia , Alimentos Fortificados/normas , Hierro de la Dieta/normas , Adolescente , Niño , Preescolar , Harina , Humanos , Lactante , Hierro de la Dieta/uso terapéutico , Sesgo de Publicación , Resultado del TratamientoRESUMEN
BACKGROUND: Although elemental iron powders are widely used to fortify cereal products, little data exist on their efficacy in humans. OBJECTIVE: We compared the efficacy of wheat-based snacks fortified with ferrous sulfate, electrolytic iron, or hydrogen-reduced iron in Thai women with low iron stores. DESIGN: A double-blind intervention was conducted in 18-50-y-old women (n = 330) randomly assigned into 4 groups to receive either no fortification iron or 12 mg Fe/d for 6 d/wk for 35 wk as ferrous sulfate, electrolytic iron, or hydrogen-reduced iron in a baked, wheat-flour-based snack. Snacks were not consumed with meals, and consumption was monitored. At baseline, 20 wk, and 35 wk, hemoglobin status and iron were measured and the groups were compared. RESULTS: Between baseline and 35 wk, geometric mean serum ferritin (SF) increased significantly in all 3 groups receiving iron (P < 0.01), and geometric mean serum transferrin receptor (TfR) decreased significantly in the groups receiving ferrous sulfate and electrolytic iron (P < 0.05). Calculated mean (+/-SD) body iron stores increased from 1.5 +/- 2.8 to 5.4 +/- 2.9 mg/kg in the ferrous sulfate group, from 1.5 +/- 3.5 to 4.4 +/- 3.6 mg/kg in the electrolytic iron group, and from 1.3 +/- 3.2 to 3.2 +/- 4.3 mg/kg in the hydrogen-reduced iron group (P < 0.01 for all 3 groups) but did not change significantly in the control group. CONCLUSIONS: Ferrous sulfate, electrolytic iron, and hydrogen-reduced iron, fortified into wheat-based snacks, significantly improved iron status. On the basis of the change in body iron stores during the 35-wk study, the relative efficacy of the electrolytic and hydrogen-reduced iron compared with ferrous sulfate was 77% and 49%, respectively.
Asunto(s)
Alimentos Fortificados , Hemoglobinas/análisis , Hierro de la Dieta/farmacocinética , Triticum , Adolescente , Adulto , Anemia Ferropénica/sangre , Anemia Ferropénica/prevención & control , Disponibilidad Biológica , Método Doble Ciego , Femenino , Ferritinas/sangre , Compuestos Ferrosos/administración & dosificación , Compuestos Ferrosos/farmacocinética , Alimentos Fortificados/normas , Humanos , Absorción Intestinal , Hierro de la Dieta/administración & dosificación , Hierro de la Dieta/normas , Persona de Mediana Edad , Receptores de Transferrina/sangre , Tailandia , Resultado del TratamientoRESUMEN
Currently iron deficiency is treated only when anaemia has developed. In premenopausal women a haemoglobin level lower than 7.5 mmol/l justifies the diagnosis of anaemia. Reference values for haemoglobin in women have, however, been established while excluding only the extreme iron-deficient group, in which no iron could be found in the bone marrow. Studies on iron substitution in sufficient dosage in premenopausal women recorded haemoglobin values rising up to > or = 8.0 mmol/l. Premenopausal women will benefit from iron supplementation to optimize haemoglobin values and iron stores. Their physical condition is directly proportional to haemoglobin values. When pregnancy occurs sufficient iron stores corresponding to a ferritin value of > or = 80 micrograms/l are beneficial to mother and child. There are no rational arguments to refrain from iron supplementation in premenopausal women with suboptimal iron stores.
Asunto(s)
Anemia Ferropénica/diagnóstico , Ferritinas/sangre , Hemoglobinas/metabolismo , Hierro de la Dieta/normas , Premenopausia , Salud de la Mujer , Adulto , Anemia Ferropénica/dietoterapia , Anemia Ferropénica/prevención & control , Femenino , Humanos , Países Bajos/epidemiología , Política Nutricional , Embarazo , Complicaciones Hematológicas del Embarazo/prevención & control , Premenopausia/sangre , Valores de ReferenciaRESUMEN
Iron intake and status were investigated in 471 mothers (age range: 16-53 years) from rural areas in Khorramabad, Islamic Republic of Iran. Although average total iron intake was acceptable, only 6.4% of women derived at least 4% of their total intake from animal iron. Average energy and protein intakes were inadequate. Low iron status was seen in 8.2%-28.7%, depending on the parameter used, with 28.3% experiencing iron-deficiency anaemia. Significantly higher animal iron intakes were found in literate or employed women, or those of family size fewer than six people. Increasing employment opportunities, income levels and literacy rates for women will result in better iron intake and status and should receive particular attention in national planning.
Asunto(s)
Anemia Ferropénica/epidemiología , Conducta Alimentaria , Hierro de la Dieta , Madres/estadística & datos numéricos , Salud Rural/estadística & datos numéricos , Salud de la Mujer , Adolescente , Adulto , Anemia Ferropénica/diagnóstico , Anemia Ferropénica/etiología , Anemia Ferropénica/prevención & control , Escolaridad , Empleo/estadística & datos numéricos , Ingestión de Energía , Composición Familiar , Femenino , Hematócrito , Hemoglobinas/análisis , Humanos , Renta/estadística & datos numéricos , Irán/epidemiología , Hierro de la Dieta/normas , Hierro de la Dieta/provisión & distribución , Persona de Mediana Edad , Madres/educación , Evaluación Nutricional , Encuestas Nutricionales , Necesidades Nutricionales , Estado Nutricional , Factores SocioeconómicosAsunto(s)
Política Nutricional , Adolescente , Adulto , Asia Sudoriental , Calcio de la Dieta/normas , Niño , Preescolar , Proteínas en la Dieta/normas , Ingestión de Energía , Femenino , Humanos , Lactante , Yodo/normas , Hierro de la Dieta/normas , Masculino , Persona de Mediana Edad , Embarazo , Vitaminas/normasAsunto(s)
Política Nutricional , Adulto , Preescolar , Proteínas en la Dieta/normas , Ingestión de Energía , Femenino , Humanos , Indonesia , Lactante , Yodo/normas , Hierro de la Dieta/normas , Masculino , Embarazo , Vitamina A/normas , Zinc/normasRESUMEN
Micronutrients are the key to optimal macronutrient metabolism because of their essential role in metabolism. Invariably, metabolic steps require the concomitant involvement of one or more vitamins and minerals. Chronic degenerative disease etiology and rate of pathogenesis are intimately associated with micronutrient imbalances. Although precise mechanisms remain to be identified, antioxidant status is critical in atherosclerosis and cancer pathogenesis. While elucidating estimates and establishing "singular" values by sex and age for parameters such as estimated average requirements, RDA, and RDI, it is imperative to arrive at these estimates in the light of their interdependent role in metabolism.