RESUMO
Vitamin A deficiency (VAD) increases risk for morbidity and mortality. Food-based approaches offer one strategy to improve vitamin A status. This systematic review assessed evidence of the effects of food-based approaches on the vitamin A status of women and children under 5 y. VAD was defined as clinical ocular symptoms, such as loss of vision, and/or retinol plasma or serum concentration <0.70 µmol/L. Searches on food-based approaches to improve vitamin A status were conducted for the period 2011-2022 on PubMed, CINHAL, Web of Science, and Google Scholar using PRISMA guidelines. English-language publications were included. Case studies, unpublished dissertations, and non-peer-reviewed studies were excluded. This review comprises 24 of 27,322 identified studies; 23 included studies focused on provitamin A carotenoids. There were 17,214 participants across the 24 studies with sample sizes ranging from 8 to 3571 individuals. Intervention studies spanned from 3 wk to 2 y. Fifteen (63%) studies were randomized control trials, 7 were cross-sectional, and 2 were longitudinal studies. Most studies (N = 21) used biochemical measurements, for example, serum retinol, to assess vitamin A status; other studies used clinical symptoms (for example, xerophtalmia) or dietary intake. Thirteen (54%) studies reported a statistically significant effect of food-based interventions (N = 8) or an association of diet (N = 5) on vitamin A status. This systematic review indicated that some food-based interventions improved vitamin A status, thus offering a safe and effective delivery mechanism for vitamin A. There appeared to be significant association between vitamin A status and consumption of foods with high concentrations of preformed vitamin A and provitamin A carotenoids. Differences across studies in regard to the period of evaluation, food approaches used, and statistical power may explain the lack of effectiveness of food-based approaches on vitamin A status in some studies.
Assuntos
Deficiência de Vitamina A , Vitamina A , Criança , Humanos , Feminino , Provitaminas , Dieta , CarotenoidesRESUMO
Refugees bring significant economic and cultural benefits to communities and yet face elevated risk of chronic disease and barriers to good health in the U.S. Community-based participatory research (CBPR) can benefit refugee communities and provide training/mentoring opportunities for students. The Cambodian Women's Health Study was a four-phase, multi-year CBPR university-community collaboration with the Massachusetts Cambodian community that focused on health, nutrition, pregnancy, and food security among primarily young women of Cambodian heritage ages 15-30 years old. Phase 1 was a focus group discussion (FGD, n = 4) and cross-sectional survey (n = 56) with pregnant women. Phase 2 was a cross-sectional survey (n = 107) with nonpregnant women. Phase 3 was a series of FGD (seven FGD, n = 38) with women. Phase 4 was a student-led translational nutrition intervention (three classes) with women (n = 11) and men (n = 10). The study design included compensation and support for the community partner and included structured mentoring of students (six graduates, eight undergraduates) in CBPR methods, adult learning, and cultural humility. Benefits to the community agency included enhanced research capacity, including supervising student research assistants, and robust compensation. Benefits to students included intensive mentoring and training. Successes included cost-effectiveness and strong recruitment and experiences with participants. Challenges included issues with student-led recruitment and organization that required additional mentoring and reflection. To work toward socially just and equitable research and interventions, CBPR collaborative efforts should include intentional meaningful compensation and community capacity-building as well as structured mentoring and training for student researchers and should build on existing work and relationships within communities.
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Pesquisa Participativa Baseada na Comunidade , Estudantes , Gravidez , Adulto , Masculino , Humanos , Feminino , Adolescente , Adulto Jovem , Estudos Transversais , Camboja , MassachusettsRESUMO
Background: Allostatic load, a multisystem composite measure of chronic stress reflecting the cumulative wear and tear on the body, has utility in explaining maternal and child health disparities and predicting future health when measured during the peripartum period. Research using cross-sectional data has demonstrated an inverse association between concurrent breastfeeding status and maternal postpartum allostatic load. However, the relationship between breastfeeding duration and postpartum allostatic load has not been determined. Objective: This study aimed to examine the association between breastfeeding duration and postpartum allostatic load using prospective data, and to compare the association by race/ethnicity to better understand etiologies of health inequities. Materials and Methods: A secondary analysis of a data sample of 1,791 postpartum women from the Community Child Health Research Network was conducted. Multiple linear regression tested the association between and breastfeeding duration and allostatic load (range 0-10, calculated from 10 biomarkers) at 6 and 12 months postpartum, adjusting for race/ethnicity, maternal age, education, poverty level, study center, smoking, marital status, and prepregnancy body mass index. Stratified analyses examined differences in associations by race/ethnicity. Results: Breastfeeding duration was inversely associated with maternal allostatic load. In adjusted models, mothers who breastfed ≥6 months had 0.41 points lower allostatic load at 6 months (95% CI: -0.71 to -0.11) and 0.36 points lower allostatic load at 12 months postpartum (95% CI: -0.69 to -0.036) compared with mothers who never breastfed. Effect sizes varied in strength and significance across race/ethnic groups. Conclusions: Study findings suggest that extended breastfeeding for at least 6 months is linked with reduced chronic stress load in mothers during the first year postpartum. The inconsistency of findings across race/ethnic groups signals the importance of adjusting for prepregnancy allostatic load in future studies.
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Alostase , Aleitamento Materno , Criança , Feminino , Humanos , Saúde Materna , Estudos Transversais , Estudos Prospectivos , Período Pós-Parto , BiomarcadoresRESUMO
Objective: Vitamin A deficiency (VAD) has serious public health consequences including morbidity and mortality for populations in low and middle-income countries (LMICs), especially for children under 5 years and pregnant women. LMICs are at greater risk of VAD, in part due to low levels of consumption of vitamin A-rich foods most of which are plant-based, such as orange-fleshed sweet potatoes (OFSP), with lower bioavailability than animal sources of the vitamin A. Food-based approaches such as biofortification of OFSP, including promoting the consumption of vitamin A-rich biofortified staple crops, has been shown to be potentially effective in improving the status of vitamin A and other micronutrients. This study examined vitamin A-rich food consumption and its predictors among women of reproductive age from OFSP-growing households in two regions of Uganda. Methods: A cross-sectional survey was conducted among 617 OFSP growing households, focusing on women in the reproductive age group from the northern and eastern regions of Uganda. Households were not receiving any VAD-related intervention at the time of the survey. Quantitative data included vitamin A-rich food consumption, knowledge on vitamin A, and rich food sources dietary intake, using a 7-day food frequency questionnaire. Vitamin A consumption and risk of deficiency were estimated using the Hellen Keller International guide. Results: The majority of women in this study were either pregnant (80%) or lactating (17%). More than 70% of the study population had a weighted vitamin A rich food consumption mean score of <6 days per week, indicating a high risk of VAD. Knowledge about vitamin A [b (SE) = -0.18 (0.50), p < 0.001] was significantly and inversely associated with vitamin A rich food consumption. Conclusion: Components of food insecurity such as availability, affordability, utilization, and changing food preferences may contribute to the unexpected inverse relationship between knowledge and consumption of vitamin A rich foods. Scaling up biofortified food initiatives, including OFSP, can improve consumption of vitamin A rich foods with effective strategies to comprehensively address consumption barriers such as lack of nutrition education, cooking skills, and storage facilities, as well as low production levels and perceived contamination of biofortified foods.
Assuntos
Dieta , Ipomoea batatas , Deficiência de Vitamina A , Feminino , Humanos , Gravidez , Estudos Transversais , Lactação , Uganda , Vitamina A , Deficiência de Vitamina A/prevenção & controle , Inquéritos e Questionários , Dieta/estatística & dados numéricos , Adulto , ConhecimentoRESUMO
Research on geographic differences in health focuses largely on children less than five years; little is known about adolescents-and even less regarding younger adolescents-a vulnerable group at a critical stage of the life course. Africa's rapid population growth and urbanization rates, coupled with stagnant rates of undernutrition, further indicate the need for country-specific data on rural-urban health disparities to inform development policies. This study examined rural-urban disparities in body mass index-for-age-and-sex (BAZ) and height-for-age-and-sex z-scores (HAZ) among younger adolescents in Tanzania. Participants were randomly selected adolescents aged 10-14 years (N = 1,125) residing in Kilosa (rural) and Moshi (urban) districts of Tanzania. Individual and household-level data were collected using surveys and anthropometric data was collected on all adolescents. Age, sex, household living conditions, and assets were self-reported. BAZ and HAZ were calculated using the WHO reference guide. The prevalence of undernutrition was 10.9% among rural and 5.1% among urban adolescents (p<0.001). Similarly, stunting prevalence was greater in rural (64.5%) than urban (3.1%) adolescents (p<0.001). After adjusting for covariates, rural residence was significantly and inversely associated with BAZ (B = -0.29, 95% CI: -0.52, -0.70, p = 0.01), as well as with HAZ (B = -1.79, 95% CI: -2.03, -1.54, p<0.001). Self-identified males had lower BAZ (B = -0.23, 95% CI: -0.34, -0.11, p<0.001) and HAZ (B = -0.22, 95% CI: -0.35, -0.09, p = 0.001) than self-identified female adolescents. Rural-urban disparities in nutritional status were significant and gendered. Findings confirm place of residence as a key determinant of BAZ and HAZ among younger adolescents in Tanzania. Targeted gender-sensitive interventions are needed to limit growth faltering and improve health outcomes in rural settings.
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Disparidades nos Níveis de Saúde , Estado Nutricional , População Rural/estatística & dados numéricos , População Urbana/estatística & dados numéricos , Adolescente , Fatores Etários , Criança , Transtornos da Nutrição Infantil/epidemiologia , Feminino , Humanos , Masculino , Desnutrição/epidemiologia , Fatores Sexuais , Tanzânia/epidemiologiaRESUMO
BACKGROUND: Eswatini has the highest global prevalence of HIV despite decades of universal access to free antiretroviral therapy (ART). We conducted a mixed methods study to investigate barriers to ART adherence among women living with HIV (WLHIV) in rural communities of Eswatini. Qualitative findings were reported in our previous publication. This subsequent paper expands on our qualitative analysis to examine the magnitude to which identified barriers impacted ART adherence among WLHIV in the same communities. METHODS: We used an exploratory sequential design to collect data from WLHIV (n = 166) in rural Eswatini. Quantitative data were collected using interviewer-administered survey questionnaires between October and November 2017. ART adherence was measured using the CASE Adherence Index, with scores less than 10 indicating nonadherence. Log-binomial regression models were used to examine the extent to which critical barriers affected ART adherence among study participants. RESULTS: A majority of the women in our study (56%) were nonadherent to ART. Of the barriers identified in our prior qualitative analysis, only eight were found to be significantly associated with ART nonadherence in our quantitative analysis. These include, with adjusted risk ratios (ARR) and 95% confidence intervals (95% CI): household food insecurity (ARR: 3.16, 95% CI: 1.33-7.52), maltreatment by clinic staff (ARR: 2.67, 95% CI: 1.94-3.66), forgetfulness (ARR: 1.80, 95% CI: 1.41-2.31), stress (ARR: 1.47, 95% CI: 1.14-1.88), gossip (ARR: 1.57, 95% CI: 1.21-2.04), mode of transport (ARR: 0.59, 95% CI: 0.44-0.79), age (ARR: 0.98, 95% CI: 0.97-0.99), and lack of community support (ARR: 0.55, 95% CI: 0.35-0.85). CONCLUSIONS: Among numerous barriers identified in our study, food insecurity was found to be a significant contributor toward ART nonadherence among women living with HIV in rural Eswatini. Future strategies aimed at improving ART adherence in Eswatini should include programs which provide food and nutrition support for people living with HIV, particularly rural women living in poverty.
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Antirretrovirais/uso terapêutico , Apoio Comunitário/normas , Insegurança Alimentar , Infecções por HIV/epidemiologia , Adulto , Apoio Comunitário/psicologia , Essuatíni , Feminino , Abastecimento de Alimentos , Infecções por HIV/tratamento farmacológico , Infecções por HIV/metabolismo , Infecções por HIV/virologia , Humanos , Masculino , Adesão à Medicação , Pobreza , População RuralRESUMO
ETHNOPHARMACOLOGICAL RELEVANCE: Evidence of phytochemical roles in infant development and maternal recovery offers insights into beneficial functions of traditional plant use during lactation and the postpartum period. Ethnopharmacological research has relevance to global priorities on maternal and child health, to understanding origins and determinants of human self-medication, and for reconciling traditional postpartum practices and mainstream healthcare. AIM OF THE STUDY: Present emerging evidence, within evolutionary and socio-cultural contexts, on the role of maternal consumption on transfer of phytochemicals into breast milk with impacts on maternal and child health, and on infant development. Establish current state of knowledge and an ethnopharmacological research agenda that is attentive to cross-cultural and regional differences in postpartum plant use. MATERIALS AND METHODS: An extensive literature review using Medline, Scopus, and Web of Science focused on traditional and contemporary use and socio-cultural context, as well as physiological, pharmacological, toxicological, and behavioral activities of plants used medicinally by women during postpartum recovery and lactation. RESULTS: The most widely reported postpartum plants show antimicrobial, anti-inflammatory, immunological, and neurophysiological activities, with low toxicity. Phytochemicals transfer from maternal consumption into breast milk in physiological concentrations, while animal studies demonstrate immunomodulation and other actions of medicinal plants during lactation. Reporting on the use and diverse traditional knowledge of women about plants during the postpartum period is obscured by the marginal place of obstetric issues and by gender biases in ethnobotanical research. In many contemporary contexts use is prejudiced by precautionary risk warnings in health literature and practice that confound lactation with pregnancy. CONCLUSIONS: Although systematic investigation of postpartum plant use is lacking, known pharmacological activities support potential benefits on infant development and maternal health with immediate and long-term consequences in relation to allergic, inflammatory, autoimmune, and other diseases. An ethnopharmacological agenda focused on the perinatal period requires directed methodologies and a regional approach in relation to culturally-specific knowledge and practices, traditional plant use, and local health needs. Testing the hypothesis that phytochemicals transferred from medicinal plants into breast milk impact the human immune system and other aspects of infant development requires extended analysis of phytochemicals in human milk and infant lumen and plasma, as well as effects on gastrointestinal and milk microbiome.
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Desenvolvimento Infantil , Lactação , Saúde Materna , Medicina Tradicional , Plantas Medicinais , Período Pós-Parto , Feminino , Humanos , Recém-NascidoRESUMO
BACKGROUND: Despite access to free antiretroviral therapy (ART) for all people living with human immunodeficiency virus (HIV), noncompliance to treatment continues to be a significant challenge in Eswatini. Yet studies investigating barriers to ART adherence in Eswatini are scarce. Most notably, there is a lack of research regarding rural women in Eswatini, who are currently the country's most vulnerable to HIV infection. Therefore, the objective of the study is to investigate individual, household, and community level barriers to ART adherence among rural women living with HIV. METHODS: We conducted a qualitative study to investigate individual, household, and community level barriers to ART adherence. We conducted focus group discussions with HIV-infected women (n = 4) from rural villages in Eswatini, and in-depth interviews with healthcare workers (n = 8) serving the area clinics. Open and axial coding techniques were used for data analysis and interpreted within a social ecological framework. RESULTS: Our findings revealed several individual level barriers including hunger, side effects of ART, personal stress, lack of disclosure of HIV status, alcohol use, and forgetting to take ART. Lack of food, unemployment and scarcity of financial resources were identified as critical barriers at the household level. Community and institutional barriers encompassed factors related to health delivery such as lack of privacy, travel time, transportation costs, excessive alcohol use by healthcare workers, maltreatment, public and self-stigma, gossip, and long waits at clinics. CONCLUSIONS: Rural women living with HIV face multilevel barriers to ART adherence. Support programs aimed at increasing ART adherence among this vulnerable population need to develop targeted polices to alleviate challenges rural women face, beginning with expanding qualifications for food assistance programs.
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Infecções por HIV/psicologia , Adesão à Medicação , Adulto , Consumo de Bebidas Alcoólicas , Antirretrovirais/efeitos adversos , Antirretrovirais/uso terapêutico , Essuatíni , Feminino , Infecções por HIV/tratamento farmacológico , Pessoal de Saúde/psicologia , Humanos , Entrevistas como Assunto , Pobreza , Privacidade , População Rural , Classe Social , Apoio Social , Estresse PsicológicoRESUMO
The effect of skipping breakfast on health, especially in adults, remains a controversial topic. A secondary data analysis was conducted to examine associations between breakfast eating patterns and weight loss, nutrient intake, and metabolic parameters among participants with metabolic syndrome (MetS) (n = 240). Three randomly selected 24-h dietary recalls were collected from each participant at baseline and at the one-year visit. Skipped breakfast was seen in 32.9% at baseline and in 17.4% at the one-year visit, respectively. At baseline, after adjustment for demographics and physical activity, participants who ate breakfast had a higher thiamin, niacin, and folate intake than did breakfast skippers (p < 0.05); other selected parameters including body weight, dietary quality scores, nutrient intake, and metabolic parameters showed no significant differences between the two groups (p ≥ 0.05). From baseline to one year, after adjustment for covariates, mean fat intake increased by 2.7% (95% confidence intervals (CI): -1.0, 6.5%) of total energy in breakfast skippers in comparison to the 1.2% decrease observed in breakfast eaters (95% CI: -3.4, 1.1%) (p = 0.02). Mean changes in other selected parameters showed no significant differences between breakfast skippers and eaters (p > 0.05). This study did not support the hypothesis that skipping breakfast has impact on body weight, nutrient intakes, and selected metabolic measures in participants with MetS.
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Peso Corporal , Desjejum , Dieta , Comportamento Alimentar , Síndrome Metabólica/metabolismo , Complexo Vitamínico B/administração & dosagem , Adulto , Idoso , Registros de Dieta , Gorduras na Dieta/administração & dosagem , Feminino , Ácido Fólico/administração & dosagem , Humanos , Masculino , Rememoração Mental , Pessoa de Meia-Idade , Niacina/administração & dosagem , Avaliação Nutricional , Obesidade , Tiamina/administração & dosagem , Adulto JovemRESUMO
Household food insecurity contributes to poor nutritional health, with negative consequences on growth and development during childhood. Although early childhood nutrition needs have received much attention, another important nutritional phase is adolescence. In a sample of 670 adolescents from Kilosa District, Tanzania, this study used 3 approaches to better understand the relationship between food insecurity and undernutrition. First, this study examined the associations between 3 commonly used measures of household food security and undernutrition among 670 adolescents from Kilosa District, Tanzania. The measures of household food security, energy adequacy per adult equivalent, dietary diversity score, and coping strategies index, were strongly correlated with each other and household assets (P < 0.05). Second, this study measured the nutritional status of adolescents in this district, finding a high prevalence of undernutrition (21% with BMI-for-age <5th percentile of the National Center for Health Statistics/WHO reference). Third, this study measured the association between the log odds of undernutrition (as the dependent variable) and each of the 3 measures of household food security. In separate models, household energy adequacy per adult equivalent and household dietary diversity score were inversely associated with undernutrition after adjusting for gender, age, puberty, and the interaction between age and puberty. By contrast, a greater use of coping strategies was not associated with undernutrition. Strategies focused on increasing household energy intake and improving dietary diversity among the most vulnerable households could improve the nutritional health of adolescents.