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1.
Matern Child Nutr ; 14(2): e12550, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29098763

RESUMEN

Suboptimal breastfeeding practices, early initiation of complementary feeding, and monotonous cereal-based diets have been implicated as contributors to continuing high rates of child undernutrition in sub-Saharan Africa. Nutrition-sensitive interventions, including agricultural programs that increase access to nutrient-rich vegetables, legumes, and animal-source foods, have the potential to achieve sustainable improvements in children's diets. In the quest to evaluate the efficacy of such programs in improving growth and development in the first 2 years of life, there is a role for mixed methods research to better understand existing infant and young child feeding practices. This analysis forms part of a longitudinal study assessing the impact of improvements to poultry health and crop production on diets and growth of 503 randomly selected children from eight rural communities in Manyoni District in central Tanzania. Using an explanatory sequential design, the quantitative phase of data collection was conducted between May 2014 and May 2016, comprising six monthly structured questionnaires, four monthly household-level documentation of chicken and egg consumption, and fortnightly records of children's breastfeeding status. The subsequent qualitative phase involved in-depth interviews with a subset of 39 mothers in October 2016. Breastfeeding was almost universal (96.8%) and of long duration (mean = 21.7 months, SD = 3.6), but early initiation of complementary feeding was also common (74.4%; mean = 4.0 months, SD = 1.8), overwhelmingly driven by maternal perceptions of insufficient milk supply (95.0%). Chicken and eggs were infrequently eaten, but close associations between maternal and child consumption patterns (p < .001) suggest the potential for strategies that increase household-level consumption to bring nutritional benefits to young children.


Asunto(s)
Fenómenos Fisiológicos Nutricionales Infantiles/fisiología , Dieta/métodos , Alimentos Infantiles/estadística & datos numéricos , Fenómenos Fisiológicos Nutricionales del Lactante/fisiología , Productos Avícolas/estadística & datos numéricos , Población Rural/estadística & datos numéricos , Preescolar , Humanos , Lactante , Estudios Longitudinales , Masculino , Tanzanía
2.
Br J Nutr ; 116(10): 1709-1719, 2016 Nov 28.
Artículo en Inglés | MEDLINE | ID: mdl-27821202

RESUMEN

Animal-source foods (ASF) have the potential to enhance the nutritional adequacy of cereal-based diets in low- and middle-income countries, through the provision of high-quality protein and bioavailable micronutrients. The development of guidelines for including ASF in local diets requires an understanding of the nutrient content of available resources. This article reviews food composition tables (FCT) used in sub-Saharan Africa, examining the spectrum of ASF reported and exploring data sources for each reference. Compositional data are shown to be derived from a small number of existing data sets from analyses conducted largely in high-income nations, often many decades previously. There are limitations in using such values, which represent the products of intensively raised animals of commercial breeds, as a reference in resource-poor settings where indigenous breed livestock are commonly reared in low-input production systems, on mineral-deficient soils and not receiving nutritionally balanced feed. The FCT examined also revealed a lack of data on the full spectrum of ASF, including offal and wild foods, which correspond to local food preferences and represent valuable dietary resources in food-deficient settings. Using poultry products as an example, comparisons are made between compositional data from three high-income nations, and potential implications of differences in the published values for micronutrients of public health significance, including Fe, folate and vitamin A, are discussed. It is important that those working on nutritional interventions and on developing dietary recommendations for resource-poor settings understand the limitations of current food composition data and that opportunities to improve existing resources are more actively explored and supported.

3.
Br J Nutr ; 108(8): 1484-93, 2012 Oct 28.
Artículo en Inglés | MEDLINE | ID: mdl-22244349

RESUMEN

The present study examined whether long-term supplementation with once- and twice-weekly multiple micronutrients (MMN-1 and MMN-2) can improve Hb and micronutrient status more than twice-weekly Fe-folic acid (IFA-2) supplementation in non-anaemic adolescent girls in Bangladesh. An equal number of 324 rural schoolgirls aged 11-17 years were given MMN-1 or MMN-2 or IFA-2 supplements for 52 weeks in a randomised, double-blind trial. Blood samples were collected at baseline, and at 26 and 52 weeks of supplementation. The girls receiving IFA-2 supplements were more likely to be anaemic than the girls receiving MMN-2 supplements for 26 weeks (OR 5·1, 95% CI 1·3, 19·5; P = 0·018). All three supplements reduced Fe deficiency effectively. Both the MMN-1 and MMN-2 groups showed significantly greater improvements in vitamins A, B(2) and C status than the girls in the IFA-2 group, as might be expected. Receiving a MMN-1 supplement was found to be less effective than MMN-2 supplement in improving Fe, vitamins A, B(2) and folic acid status. Receiving micronutrient supplements beyond 26 weeks showed little additional benefit in improving micronutrient status. In conclusion, given twice-weekly for 26 weeks, MMN supplements can improve micronutrient status effectively with no significant increase in Hb concentration compared with IFA supplements in non-anaemic Bangladeshi adolescent girls. However, it significantly reduces the risk of anaemia. Before any recommendations can be made, further research, including into cost-effectiveness, is needed to see whether MMN supplementation has any additional longer-term health benefits over that of IFA supplementation in this population.


Asunto(s)
Anemia Ferropénica/prevención & control , Suplementos Dietéticos , Ácido Fólico/uso terapéutico , Hemoglobinas/metabolismo , Hierro/uso terapéutico , Micronutrientes/uso terapéutico , Estado Nutricional/efectos de los fármacos , Adolescente , Anemia , Anemia Ferropénica/sangre , Bangladesh , Niño , Método Doble Ciego , Femenino , Ácido Fólico/sangre , Ácido Fólico/farmacología , Humanos , Hierro/sangre , Hierro/farmacología , Deficiencias de Hierro , Micronutrientes/sangre , Micronutrientes/farmacología , Valores de Referencia , Factores de Tiempo , Vitaminas/sangre
4.
J Nutr ; 140(1): 162S-9S, 2010 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-19939995

RESUMEN

Rising food prices, resulting from the ongoing global economic crisis, fuel price volatility, and climate change, have an adverse impact upon the poor, especially those in food-importing, resource-limited countries. The conventional approach by large organizations has been to advocate for increased staple crop yields of mainly cereals. High food prices are predicted to continue to at least 2015. Past shocks and their known impacts upon nutrition were reviewed. Price instability and increases have long been an existing global problem, which has been exacerbated by recent macroeconomic shocks such as acute emergencies due to war and civil strife, acute climatic events, increase in food prices, fuel price volatility, dysfunction of the global financial systems, long-term climate change, and the emergence of failed states. The FAO estimated that there were 815 million "hungry" people in 2006, with a now additional 75-135 million with increased vulnerability, and currently it is estimated that there are one billion people at risk of food insecurity. The shocks initially compromise maternal and child nutrition, mainly through a reduction in dietary quality and an increase in micronutrient deficiencies and concomitant increases in infectious disease morbidity and mortality. A further reduction in the quantity of diet may follow with greater underweight and wasting. Recent macroeconomic shocks have greatly increased the number of people who are vulnerable to hunger in developing countries. Nutritional surveillance systems need to be strengthened and expanded to inform policy decisions.


Asunto(s)
Agricultura/tendencias , Fenómenos Fisiológicos Nutricionales Infantiles , Abastecimiento de Alimentos/economía , Fenómenos Fisiologicos Nutricionales Maternos , Evaluación Nutricional , Preescolar , Cambio Climático , Conservación de los Recursos Naturales , Desastres , Femenino , Humanos , Política
5.
J Nutr ; 140(10): 1879-86, 2010 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-20702745

RESUMEN

Previous short-term supplementation studies showed no additional hematologic benefit of multiple micronutrients (MMN) compared with iron + folic acid (IFA) in adolescent girls. This study examines whether long-term once- or twice-weekly supplementation of MMN can improve hemoglobin (Hb) and micronutrient status more than twice-weekly IFA supplementation in anemic adolescent girls in Bangladesh. Anemic girls (n = 324) aged 11-17 y attending rural schools were given once- or twice-weekly MMN or twice-weekly IFA, containing 60 mg iron/dose in both supplements, for 52 wk in a randomized double-blind trial. Blood samples were collected at baseline and 26 and 52 wk. Intent to treat analysis showed no significant difference in the Hb concentration between treatments at either 26 or 52 wk. However, after excluding girls with hemoglobinopathy and adjustment for baseline Hb, a greater increase in Hb was observed with twice-weekly MMN at 26 wk (P = 0.045). Although all 3 treatments effectively reduced iron deficiency, once-weekly MMN produced significantly lower serum ferritin concentrations than the other treatments at both 26 and 52 wk. Both once- and twice-weekly MMN significantly improved riboflavin, vitamin A, and vitamin C status compared with IFA. Overall, once-weekly MMN was less efficacious than twice-weekly MMN in improving iron, riboflavin, RBC folic acid, and vitamin A levels. Micronutrient supplementation beyond 26 wk was likely important in sustaining improved micronutrient status. These findings highlight the potential usefulness of MMN intervention in this population and have implications for programming.


Asunto(s)
Anemia/tratamiento farmacológico , Ácido Fólico/administración & dosificación , Hemoglobinas/análisis , Hierro de la Dieta/administración & dosificación , Micronutrientes/administración & dosificación , Micronutrientes/deficiencia , Adolescente , Anemia/epidemiología , Anemia Ferropénica/tratamiento farmacológico , Deficiencia de Ácido Ascórbico/tratamiento farmacológico , Deficiencia de Ácido Ascórbico/epidemiología , Bangladesh/epidemiología , Niño , Suplementos Dietéticos , Método Doble Ciego , Femenino , Ácido Fólico/sangre , Humanos , Estado Nutricional , Deficiencia de Riboflavina/tratamiento farmacológico , Deficiencia de Riboflavina/epidemiología , Población Rural , Factores de Tiempo , Deficiencia de Vitamina A/tratamiento farmacológico , Deficiencia de Vitamina A/epidemiología
6.
J Nutr ; 140(1): 138S-42S, 2010 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-19939998

RESUMEN

The global economic crisis, commodity price hikes, and climate change have worsened the position of the poorest and most vulnerable people. These crises are compromising the diet and health of up to 80% of the population in most developing countries and threaten the development of almost an entire generation of children ( approximately 250 million), because the period from conception until 24 mo of age irreversibly shapes people's health and intellectual ability. High food prices reduce diversity and nutritional quality of the diet and for many also reduce food quantity. Poor households are hit hardest, because they already spend 50-80% of expenditures on food, little on medicines, education, transport, or cooking fuel, and cannot afford to pay more. Reduced public spending, declining incomes, increased food and fuel prices, and reduced remittance thus impede and reverse progress made toward Millenium Development Goals 1, 4, and 5. Investments in nutrition are among the most cost-effective development interventions because of very high benefit:cost ratios, for individuals and for sustainable growth of countries, because they protect health, prevent disability, boost economic productivity, and save lives. To bridge the gap between nutrient requirements, particularly for groups with high needs, and the realistic dietary intake under the prevailing circumstances, the use of complementary food supplements to increase a meal's nutrient content is recommended. This can be in the form of, e.g., micronutrient powder or low-dose lipid-based nutrient supplements, which can be provided for free, in return for vouchers, at subsidized, or at commercial prices.


Asunto(s)
Fenómenos Fisiológicos Nutricionales Infantiles , Cambio Climático/economía , Abastecimiento de Alimentos/economía , Salud Global , Adolescente , Adulto , Animales , Niño , Preescolar , Productos Lácteos , Países en Desarrollo , Composición Familiar , Femenino , Frutas , Humanos , Masculino , Desnutrición/prevención & control , Carne , Embarazo , Verduras
7.
Food Nutr Bull ; 31(4): S345-64, 2010 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-21214037

RESUMEN

BACKGROUND: Tuberculosis is the second leading cause of infectious disease mortality (1.8 million/year), after HIV/AIDS. There are more than 9 million new cases each year. One-third of the world's population, and 50% of adults in sub-Saharan Africa, South Asia, and SouthEast Asia, are infected, representing an enormous pool of individuals at risk for developing the disease. The situation is complicated by the HIV/AIDS pandemic, widespread undernutrition, smoking, diabetes, increased mobility, and emergence of multi- and extensively drug-resistant tuberculosis. OBJECTIVE: To review the scientific evidence about the interactions among tuberculosis, nutrition, and HIV coinfection. RESULTS: HIV infection and malnutrition lower immunity, increasing the risk of reactivation tuberculosis and primary progressive disease. Having either tuberculosis or HIV infection causes weight loss. Malnutrition markedly increases mortality among both tuberculosis and HIV/AIDS patients and should be treated concurrently with treatment of the infections. Tuberculosis treatment is a prerequisite for nutritional recovery, in addition to intake of nutrients required for rebuilding tissues, which is constrained in food-insecure households. Additional pharmaceutical treatment to reduce the catabolic impact of inflammation or promote growth may be needed. Specific nutrients can contribute to faster sputum smear clearance, which is important for reducing transmission, as well as faster weight gain when combined with an adequate diet. Adequate nutrition and weight gain in undernourished populations might reduce the incidence of tuberculosis. CONCLUSIONS: The many risk factors for the development of tuberculosis need to be addressed simultaneously, especially HIV/AIDS and food insecurity and undernutrition. For stronger evidence-based guidelines, existing recommendations and clinical applications need to be more widely applied and evaluated.


Asunto(s)
Infecciones por VIH/complicaciones , Desnutrición/complicaciones , Tuberculosis/complicaciones , Adulto , Terapia Antirretroviral Altamente Activa/métodos , Niño , Dieta/métodos , Infecciones por VIH/tratamiento farmacológico , Humanos , Desnutrición/dietoterapia , Terapia Nutricional/métodos , Estado Nutricional , Factores de Riesgo , Tuberculosis/tratamiento farmacológico
8.
Food Nutr Bull ; 31(4 Suppl): S345-64, 2010 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-24946366

RESUMEN

BACKGROUND: Tuberculosis is the second leading cause of infectious disease mortality (1.8 million/year), after HIV/AIDS. There are more than 9 million new cases each year. One-third of the world's population, and 50% of adults in sub-Saharan Africa, South Asia, and South-East Asia, are infected, representing an enormous pool of individuals at risk for developing the disease. The situation is complicated by the HIV/AIDS pandemic, widespread undernutrition, smoking, diabetes, increased mobility, and emergence of multi- and extensively drug-resistant tuberculosis. OBJECTIVE: To review the scientific evidence about the interactions among tuberculosis, nutrition, and HIV coinfection. RESULTS: HIV infection and malnutrition lower immunity, increasing the risk of reactivation tuberculosis and primary progressive disease. Having either tuberculosis or HIV infection causes weight loss. Malnutrition markedly increases mortality among both tuberculosis and HIV/AIDS patients and should be treated concurrently with treatment of the infections. Tuberculosis treatment is a prerequisite for nutritional recovery, in addition to intake of nutrients required for rebuilding tissues, which is constrained in food-insecure households. Additional pharmaceutical treatment to reduce the catabolic impact of inflammation or promote growth may be needed. Specific nutrients can contribute to faster sputum smear clearance, which is important for reducing transmission, as well as faster weight gain when combined with an adequate diet. Adequate nutrition and weight gain in undernourished populations might reduce the incidence of tuberculosis. CONCLUSIONS; The many risk factors for the development of tuberculosis need to be addressed simultaneously, especially HIV/AIDS and food insecurity and undernutrition. For stronger evidence-based guidelines, existing recommendations and clinical applications need to be more widely applied and evaluated.


Asunto(s)
Coinfección/complicaciones , Infecciones por VIH/complicaciones , Desnutrición/complicaciones , Tuberculosis/complicaciones , Adulto , Antirretrovirales/uso terapéutico , Antituberculosos/uso terapéutico , Coinfección/terapia , Dieta , Abastecimiento de Alimentos , Infecciones por VIH/epidemiología , Infecciones por VIH/terapia , Humanos , Desnutrición/terapia , Política Nutricional , Terapia Nutricional , Recurrencia , Factores de Riesgo , Tuberculosis/epidemiología , Tuberculosis/terapia , Aumento de Peso , Pérdida de Peso
9.
J Prev Med Hyg ; 61(3): E409-E423, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-33150230

RESUMEN

INTRODUCTION: Childhood diarrhoeal diseases and stunting are major health problems in low- and middle-income countries (LMICs). Poor water supply, sanitation services and hygiene, frequently encountered in resource-poor settings, contribute to childhood diarrhoea and stunting. METHODS: Data on demographic characteristics, hygiene practices, sanitation and human-animal interactions (predictors) and child height-for-age z-scores (HAZ) (outcome) were collected once, while diarrhoea incidences were collected fortnightly for 24 months (outcome). RESULTS: Drinking water from public taps (OR = 0.51, 95% CI. 0.44-0.61; p < 0.001) and open wells (OR = 0.46, 95% CI. 0.39-0.54; p < 0.001) and older age of children (OR = 0.43, 95% CI. 0.27-0.67; p < 0.001) were protective against diarrhoea. Inappropriate disposal of children's faeces (OR = 1.15, 95% CI. 1.02-1.31; p = 0.025), sharing water sources with animals in the dry season (OR = 1.48, 95% CI. 1.29-1.70; p < 0.001), overnight sharing of houses with cats (OR = 1.35, 95% CI. 1.16-1.57; p < 0.001) and keeping chickens inside the house overnight regardless of room (OR = 1.39, 95% CI. 1.20-1.60; p < 0.001) increased the risk of diarrhoea. The Sukuma language group (p = 0.005), washing hands in running water (p = 0.007), access of chickens to unwashed kitchen utensils (p = 0.030) and overnight sharing of the house with sheep (p = 0.020) were associated with higher HAZ in children. CONCLUSIONS: Until a more precise understanding of the key risk factors is available, these findings suggest efforts towards control of diarrhoea and improved linear growth in these areas should be directed to increased access to clean and safe water, hand-washing, sanitation, and improved animal husbandry practices.


Asunto(s)
Diarrea , Saneamiento , Abastecimiento de Agua , Preescolar , Diarrea/epidemiología , Femenino , Desinfección de las Manos , Humanos , Higiene , Lactante , Masculino , Tanzanía/epidemiología
10.
Adv Nutr ; 11(2): 185-199, 2020 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-31566677

RESUMEN

An ongoing challenge to our ability to address the role of food and nutrition in health promotion and disease prevention is how to design and implement context-specific interventions and guidance that are safe, efficacious, and avoid unintended consequences. The integration to effective implementation (I-to-I) concept is intended to address the complexities of the global health context through engagement of the continuum of stakeholders involved in the generation, translation, and implementation of evidence to public health guidance/programs. The I-to-I approach was developed under the auspices of the Micronutrient Forum and has been previously applied to the question of safety and effectiveness of interventions to prevent and treat nutritional iron deficiency. The present article applies the I-to-I approach to questions regarding the safety and utility of large-dose vitamin A supplementation programs, and presents the authors' perspective on key aspects of the topic, including coverage of the basic and applied biology of vitamin A nutrition and assessment, clinical implications, and an overview of the extant data with regard to both the justification for and utility of available intervention strategies. The article includes some practical considerations based on specific country experiences regarding the challenges of implementing vitamin A-related programs. This is followed by an overview of some challenges associated with engagement of the enabling communities that play a critical role in the implementation of these types of public health interventions. The article concludes with suggestions for potential approaches to move this important agenda forward.


Asunto(s)
Suplementos Dietéticos , Deficiencia de Vitamina A/prevención & control , Vitamina A/administración & dosificación , Niño , Preescolar , Suplementos Dietéticos/efectos adversos , Femenino , Salud Global , Implementación de Plan de Salud , Promoción de la Salud , Humanos , Lactante , Recién Nacido , Masculino , Evaluación Nutricional , Fenómenos Fisiológicos de la Nutrición , Ciencias de la Nutrición , Estado Nutricional , Salud Pública/métodos , Vitamina A/efectos adversos , Deficiencia de Vitamina A/epidemiología , Deficiencia de Vitamina A/mortalidad
11.
Lancet ; 371(9611): 510-26, 2008 Feb 09.
Artículo en Inglés | MEDLINE | ID: mdl-18206224

RESUMEN

80% of the world's undernourished children live in just 20 countries. Intensified nutrition action in these countries can lead to achievement of the first Millennium Development Goal (MDG) and greatly increase the chances of achieving goals for child and maternal mortality (MDGs 4 and 5). Despite isolated successes in specific countries or for interventions--eg, iodised salt and vitamin A supplementation--most countries with high rates of undernutrition are failing to reach undernourished mothers and children with effective interventions supported by appropriate policies. This paper reports on an assessment of actions addressing undernutrition in the countries with the highest burden of undernutrition, drawing on systematic reviews and best-practice reports. Seven key challenges for addressing undernutrition at national level are defined and reported on: getting nutrition on the list of priorities, and keeping it there; doing the right things; not doing the wrong things; acting at scale; reaching those in need; data-based decisionmaking; and building strategic and operational capacity. Interventions with proven effectiveness that are selected by countries should be rapidly implemented at scale. The period from pregnancy to 24 months of age is a crucial window of opportunity for reducing undernutrition and its adverse effects. Programme efforts, as well as monitoring and assessment, should focus on this segment of the continuum of care. Nutrition resources should not be used to support actions unlikely to be effective in the context of country or local realities. Nutrition resources should not be used to support actions that have not been proven to have a direct effect on undernutrition, such as stand-alone growth monitoring or school feeding programmes. In addition to health and nutrition interventions, economic and social policies addressing poverty, trade, and agriculture that have been associated with rapid improvements in nutritional status should be implemented. There is a reservoir of important experience and expertise in individual countries about how to build commitment, develop and monitor nutrition programmes, move toward acting at scale, reform or phase-out ineffective programmes, and other challenges. This resource needs to be formalised, shared, and used as the basis for setting priorities in problem-solving research for nutrition.


Asunto(s)
Protección a la Infancia , Promoción de la Salud/organización & administración , Desnutrición/prevención & control , Bienestar Materno , Política Nutricional , Adulto , África , Niño , China , Toma de Decisiones , Femenino , Alimentos/economía , Salud Global , Prioridades en Salud , Humanos , Evaluación Nutricional , Estado Nutricional , Política , Sector Privado , Desarrollo de Programa , Investigación , América del Sur
12.
Food Nutr Bull ; 30(4 Suppl): S556-73, 2009 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-20120797

RESUMEN

BACKGROUND: An independent Systematic Review Team performed a meta-analysis of 12 randomized, controlled trials comparing multiple micronutrients with daily iron-folic acid supplementation during pregnancy. OBJECTIVE: To provide an independent interpretation of the policy and program implications of the results of the meta-analysis. METHODS: A group of policy and program experts performed an independent review of the meta-analysis results, analyzing internal and external validity and drawing conclusions on the program implications. RESULTS: Although iron content was often lower in the multiple micronutrient supplement than in the iron-folic acid supplement, both supplements were equally effective in tackling anemia. Community-based supplementation ensured high adherence, but some mothers still remained anemic, indicating the need to concomitantly treat infections. The small, significant increase in mean birthweight among infants of mothers receiving multiple micronutrients compared with infants of mothers receiving iron-folic acid is of similar magnitude to that produced by food supplementation during pregnancy. Larger micronutrient doses seem to produce greater impact. Meaningful improvements have also been observed in height and cognitive development of the children by 2 years of age. There were no significant differences in the rates of stillbirth, early neonatal death, or neonatal death between the supplemented groups. The nonsignificant trend toward increased early neonatal mortality observed in the groups receiving multiple micronutrients may be related to differences across trials in the rate of adolescent pregnancies, continuing iron deficiency, and/or adequacy of postpartum health care and merits further investigation. CONCLUSIONS: Replacing iron-folic acid supplements with multiple micronutrient supplements in the package of health and nutrition interventions delivered to mothers during pregnancy will improve the impact of supplementation on birthweight and on child growth and development.


Asunto(s)
Países en Desarrollo/estadística & datos numéricos , Suplementos Dietéticos , Política de Salud , Fenómenos Fisiologicos Nutricionales Maternos , Micronutrientes/administración & dosificación , Resultado del Embarazo , Anemia Ferropénica/tratamiento farmacológico , Anemia Ferropénica/prevención & control , Peso al Nacer , Femenino , Mortalidad Fetal , Ácido Fólico/administración & dosificación , Humanos , Mortalidad Infantil , Recién Nacido , Hierro/administración & dosificación , Metaanálisis como Asunto , Micronutrientes/deficiencia , Embarazo , Complicaciones del Embarazo/tratamiento farmacológico , Complicaciones del Embarazo/prevención & control , Atención Prenatal
13.
Curr Dev Nutr ; 3(9): nzz075, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31598578

RESUMEN

Vitamin deficiencies remain major etiological factors in the global burden of disease, especially in low- and middle-income countries. The purpose of this state-of-the-art review was to update current information on deficiencies of vitamins and public health approaches to addressing them. Some stages of life present a higher risk of deficiency than others: risks are higher in pregnant women, children (from conception to young childhood), adolescents, the elderly, and all of the over 800 million people globally who are undernourished. At risk are approximately 125 million preschool children with vitamin A deficiency, as well as sub-populations at risk of deficiencies of folate, thiamin, vitamin B12, niacin, riboflavin, other B vitamins. and vitamin D. Addressing micronutrient deficiencies requires identifying those at risk and then working to prevent and manage that risk. Public health approaches include improved, diversified diets; supplementation; fortification and biofortification; and other supportive public health measures. Historically, as with pellagra and beriberi and, in the last 3 decades, with vitamin A and folic acid, there has been encouraging progress, but much remains to be done.

14.
Nutrients ; 10(11)2018 Nov 19.
Artículo en Inglés | MEDLINE | ID: mdl-30463264

RESUMEN

There is substantial current interest in linkages between livestock-keeping and human nutrition in resource-poor settings. These may include benefits of improved diet quality, through animal-source food consumption and nutritious food purchases using livestock-derived income, and hazards of infectious disease or environmental enteric dysfunction associated with exposure to livestock feces. Particular concerns center on free-roaming chickens, given their proximity to children in rural settings, but findings to date have been inconclusive. This longitudinal study of 503 households with a child under 24 months at enrolment was conducted in villages of Manyoni District, Tanzania between May 2014, and May 2016. Questionnaires encompassed demographic characteristics, assets, livestock ownership, chicken housing practices, maternal education, water and sanitation, and dietary diversity. Twice-monthly household visits provided information on chicken numbers, breastfeeding and child diarrhea, and anthropometry was collected six-monthly. Multivariable mixed model analyses evaluated associations between demographic, socioeconomic and livestock-associated variables and (a) maternal and child diets, (b) children's height-for-age and (c) children's diarrhea frequency. Alongside modest contributions of chicken-keeping to some improved dietary outcomes, this study importantly (and of substantial practical significance if confirmed) found no indication of a heightened risk of stunting or greater frequency of diarrhea being associated with chicken-keeping or the practice of keeping chickens within human dwellings overnight.


Asunto(s)
Pollos , Diarrea/epidemiología , Dieta , Trastornos del Crecimiento/epidemiología , Adolescente , Adulto , Animales , Antropometría , Preescolar , Diarrea/diagnóstico , Composición Familiar , Femenino , Trastornos del Crecimiento/diagnóstico , Humanos , Lactante , Ganado , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Evaluación Nutricional , Estado Nutricional , Aves de Corral , Prevalencia , Población Rural , Factores Socioeconómicos , Encuestas y Cuestionarios , Tanzanía , Adulto Joven
15.
Food Nutr Bull ; 39(2): 315-331, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-29793357

RESUMEN

BACKGROUND: Food fortification and biofortification are well-established strategies to address micronutrient deficiencies in vulnerable populations. However, the effectiveness of fortification programs is not only determined by the biological efficacy of the fortified foods but also by effective and sustainable implementation, which requires continual monitoring, quality assurance and control, and corrective measures to ensure high compliance. OBJECTIVE: To provide an overview of efficacy, effectiveness, economics of food fortification and biofortification, and status of and challenges faced by large-scale food fortification programs in low- and middle-income countries (LMIC). METHODS: A literature review of PubMed publications in English from 2000 to 2017, as well as gray literature, targeting nongovernmental organizations whose work focuses on this topic, complemented by national reports and a "snowball" process of citation searching. The article describes remaining technical challenges, barriers, and evidence gap and prioritizes recommendations and next steps to further accelerate progress and potential of impact. RESULTS: The review identifies and highlights essential components of successful programs. It also points out issues that determine poor program performance, including lack of adequate monitoring and enforcement and poor compliance with standards by industry. CONCLUSIONS: In the last 17 years, large-scale food fortification initiatives have been reaching increasingly larger segments of populations in LMIC. Large-scale food fortification and biofortification should be part of other nutrition-specific and nutrition-sensitive efforts to prevent and control micronutrient deficiencies. There are remaining technical and food system challenges, especially in relation to improving coverage and quality of delivery and measuring progress of national programs.


Asunto(s)
Biofortificación , Alimentos Fortificados , Salud Global , Promoción de la Salud , Política Nutricional , Países en Desarrollo , Humanos , Pobreza
16.
Nutr Rev ; 65(5): 233-45, 2007 May.
Artículo en Inglés | MEDLINE | ID: mdl-17566549

RESUMEN

Although micronutrient deficiency is a global problem, the burden is not evenly shared within affected households. This review suggests that there are important non-linearities in relationships among food intake, sharing, and caring behavior within the household. Since micronutrient status relates to interactions among biological, social, behavioral, economic, and environmental processes, outcomes are not always predictable by age, gender, or location. Understanding such variability is crucial to identifying appropriate solutions. This review represents an exploratory first step toward unmasking population-specific variations that are important for better understanding the nature of micronutrient deficiencies and for improving the focus of public health action.


Asunto(s)
Salud Global , Micronutrientes/administración & dosificación , Micronutrientes/deficiencia , Salud Pública , Adulto , Factores de Edad , Niño , Femenino , Humanos , Masculino , Factores Sexuales
17.
Food Nutr Bull ; 28(3 Suppl): S480-4, 2007 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-17988008

RESUMEN

Zinc deficiency is an important cause of morbidity in developing countries, particularly among young children, yet little information is available on the global prevalence of zinc deficiency. A working group meeting was convened by the World Health Organization (WHO), the United Nations Children's Fund (UNICEF), the International Atomic Energy Agency (IAEA), and the International Zinc Nutrition Consultative Group (IZiNCG) to review methods of assessing population zinc status and provide standard recommendations for the use of specific biochemical, dietary, and functional indicators of zinc status in populations. The recommended biochemical indicator is the prevalence of serum zinc concentration less than the age/sex/time of day-specific cutoffs; when the prevalence is greater than 20%, intervention to improve zinc status is recommended. For dietary indicators, the prevalence (or probability) of zinc intakes below the appropriate estimated average requirement (EAR) should be used, as determined from quantitative dietary intake assessments. Where the prevalence of inadequate intakes of zinc is greater than 25%, the risk of zinc deficiency is considered to be elevated. Previous studies indicate that stunted children respond to zinc supplementation with increased growth. When the prevalence of low height-for-age is 20% or more, the prevalence of zinc deficiency may also be elevated. Ideally, all three types of indicators would be used together to obtain the best estimate of the risk of zinc deficiency in a population and to identify specific subgroups with elevated risk. These recommended indicators should be applied for national assessment of zinc status and to indicate the need for zinc interventions. The prevalence of low serum zinc and inadequate zinc intakes may be used to evaluate their impact on the target population's zinc status.


Asunto(s)
Enfermedades Carenciales/diagnóstico , Estado Nutricional , Vigilancia de la Población , Zinc/sangre , Zinc/deficiencia , Factores de Edad , Biomarcadores/sangre , Estatura , Enfermedades Carenciales/sangre , Enfermedades Carenciales/tratamiento farmacológico , Crecimiento/efectos de los fármacos , Humanos , Necesidades Nutricionales , Prevalencia , Factores de Riesgo , Índice de Severidad de la Enfermedad , Factores Sexuales , Zinc/administración & dosificación , Zinc/uso terapéutico
18.
Food Nutr Bull ; 28(2): 189-97, 2007 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24683678

RESUMEN

BACKGROUND: Improving the nutritional status of an emergency-affected population is essential, because undernutrition increases infection risk and is linked to more than 50% of childhood deaths in developing countries. Emergency food aid addresses nutritional needs, including micronutrient deficiencies, but is provided only for a limited time and uses few items, so the needs of specific target groups are often not fully met. OBJECTIVE: To describe the post-tsunami experience with distribution of Vitalita Sprinkles in Aceh and Nias and to analyze the monitoring data gathered for the emergency response. METHODS: International agencies such as Helen Keller International and partners provided micronutrients in response to the tsunami emergency in Aceh and Nias and to analyze the monitoring data gathered for the emergency response. RESULTS: In March and April 2006, the percentage of children aged 6 months to 59 months who had consumed Vitalita in the previous month was more than 70% in 5 of 11 districts evaluated, 40% to 70% in another five districts, and 32% in one district. An independent survey found 25% less anemia among recipients. Almost all mothers interviewed during March to April 2006 (96.3%) had heard about Vitalita and recognized its packaging, 69% said that Vitalita contained vitamins for under-fives, 86% knew the appropriate target group for Vitalita, and 83% said it had to be mixed with solid food. Of the 26% that reported not having given Vitalita to their child in the last month, 90.5% said that their child did not like it. CONCLUSIONS AND LESSONS LEARNED: Because the product, including its concept, was new, appropriate information and training was required as well as a thorough introduction to the beneficiaries, particularly on proper use, to ensure acceptance. This experience demonstrates that providing micronutrients as part of emergency relief and transition programming, as recently recommended by the World Health Organization/UNICEF/World Food Program, is feasible.


Asunto(s)
Planificación en Desastres/métodos , Terremotos , Alimentos Fortificados , Desnutrición/prevención & control , Micronutrientes/administración & dosificación , Tsunamis , Anemia/prevención & control , Niño , Preescolar , Comportamiento del Consumidor , Suplementos Dietéticos , Desastres , Humanos , Indonesia , Lactante , Estado Nutricional , Vitamina A/administración & dosificación
19.
J Pediatr Gastroenterol Nutr ; 43 Suppl 3: S54-65, 2006 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-17204980

RESUMEN

OBJECTIVE: By reviewing the literature, lessons learned and experience regarding the nutrition-related health problems of preschool children, draw conclusions and make recommendations on education and nutrition policies for young children. RESULTS: The most common causes of under-5 mortality in low-income countries have been identified as neonatal disorders, diarrhoea, respiratory infections, malaria, measles, and in some developing countries, AIDS. More than half (56%) of all child deaths have underlying malnutrition and undernutrition as a contributing factor. Children must have optimal growth and physical and intellectual development to learn and achieve their potential in society. Solutions include both preventive and curative interventions at all levels and include both improved health and education systems. Recent focus has been on health systems interventions that address averting deaths by cause for the 42 countries that account for 90% of worldwide under-5 deaths (the majority in sub-Saharan Africa). However, parallel or multisectoral interventions must be addressed to all children at risk for death, poor health and compromised growth and development. Adequate health care and nutrition is a human right, legally established in the Convention on the Rights of the Child. CONCLUSIONS: Improved health and nutrition will lead to enhanced economic development, but having a poverty focus appears to be essential, if poor people are not to be marginalized further. The HIV/AIDS pandemic illustrates this challenge clearly. The role of education, especially girls' education, in improved health and nutrition status of children and birth-spacing is now clear, as is improving women's status. Increases in female status and education have been estimated to account for half of the reduction in child malnutrition rates during the past 25 years.


Asunto(s)
Trastornos de la Nutrición del Niño/terapia , Protección a la Infancia , Educación en Salud , Política Nutricional , Adulto , Preescolar , Costo de Enfermedad , Países Desarrollados , Países en Desarrollo , Femenino , Humanos , Masculino , Salud de la Mujer , Derechos de la Mujer
20.
Adv Nutr ; 7(1): 135-48, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26773021

RESUMEN

Paramount among the challenges to our ability to address the role of food and nutrition in health promotion and disease prevention is how to design and implement context-specific interventions and guidance. The Integration to Effective Implementation (I-to-I) concept is intended to address the complexities of the global health context through engagement of the continuum of stakeholders involved in the food and nutrition enterprise. The 2014 Micronutrient Forum (MNF) Global Conference held in Addis Ababa, Ethiopia, in June 2014 offered the opportunity to apply the I-to-I approach with the use of current concerns about the safety and effectiveness of interventions to prevent and treat iron deficiency (ID) as a case study. ID is associated with a range of adverse outcomes, especially in pregnant and nonpregnant women, infants, and primary school-age children. Strategies to combat ID include iron supplementation, multiple micronutrient powders, and food-based interventions to enhance dietary iron intake. Recent reports indicate potential increased adverse risks when iron is provided in areas with high infection burdens (e.g., malaria). This paradox has weakened iron intervention programs. Furthermore, the selection and interpretation of available biomarkers for assessing iron nutrition have been found to be compromised by the inflammatory process. These issues highlight the need for a comprehensive approach that considers basic biology, assessment, interventions, and how these can be translated into appropriate programs and policies. The application of the I-to-I with the use of the MNF offered an opportunity to explore how that might be achieved.


Asunto(s)
Anemia Ferropénica/prevención & control , Estado de Salud , Hierro de la Dieta/uso terapéutico , Hierro/uso terapéutico , Oligoelementos/uso terapéutico , Anemia Ferropénica/complicaciones , Femenino , Salud Global , Humanos , Infecciones/complicaciones , Inflamación/complicaciones , Hierro/efectos adversos , Hierro de la Dieta/efectos adversos , Embarazo , Oligoelementos/efectos adversos
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