Impact pathways from seeds to nutrition

To elucidate how, and under what conditions, increased access and use of high-quality seed translates into nutrition security among smallholder farmers, four theoretical pathways from seeds to nutrition were envisioned: the nutrient-dense seed pathway, the seed diversity pathway, the seed value chain pathway, and the seed security and resilience pathway. Across the four pathways, several factors that influence the impact of seed system directed interventions on nutrition and food security were identified. The proposed theoretical pathways can be used to not only design seed system interventions that target nutrition and food security, but also build a solid evidence base for the pathways

Vegetable seed systems among ethnic minority communities in northern Vietnam

Despite the potential of vegetables for nutrition and income in Northern Vietnam, inadequate access to quality seed is a major constraint affecting production, diversity and diet quality. Both self-saved seed and bought seed are important sources for farmers and are linked to the primary purpose of production, market access, seed production knowledge and skills, and trustworthiness of the source. Vegetable diversity, seasonal availability and seed access varies with ethnic group, location, type of and specific vegetables requiring contextualisation of nutrition-sensitive interventions. There are opportunities for farmer sharing and exchange of seeds, vegetables, and knowledge, for safeguarding diversity, promote dietary quality, and improve farmer income

TH3.1: Women empowerment among ethnic minority communities in Northern Vietnam: Lessons from a seed system for nutrition intervention

Vegetables are important for nutrition and income in Vietnam's Northern Upland, yet production is constrained by inadequate access to quality seed. In a project investigating impact pathways from seeds to nutrition among Mai Son district and Sa Pa Township ethnic minorities, a gap regarding level of women empowerment and its linkages with project outcomes and potential recommendations was identified. Pro-WEAI quantitative and qualitative methodologies were applied during the endline to explore women empowerment among H'mong, Dao and Thai ethnic minority groups - 611 households in 36 villages and 28 FGDs in 14 villages. Empowerment was higher among men than women, the Thai than other ethnicities, and in Mai Son. Empowerment of women and men in Mai Son was 13% and 45% and, in Sa Pa, at 4% and 6%, respectively. The average empowerment gap between women without gender parity and men in their households was 39% in Mai Son and 53% in Sa Pa. Across gender, ethnic group and location, all groups had <10% empowered except Thai men (48%), Hmong men (36%) and Thai women (18%) in Mai Son. Main disempowerment drivers included work balance, control over income use and mobility. Qualitative results indicated the project increased in nutrition knowledge and skills and had limited impact on empowerment which was attributed to food related activities being women's responsibility. Since women's high workload appears related to existing gender norms and stereotypes, seed system and nutrition intervention impact can be strengthened by labour-sensitive and accessible innovations and addressing the location specific barriers

The association between food environment, diet quality and malnutrition in low‐ and middle‐income adult populations across the rural—Urban gradient in Vietnam

Background: Economic reforms and trade liberalisation in Vaietnm have transformed the food environment, influencing dietary patterns and malnutrition status. The present study focuses on the relationship between food environments (proximity and density of food outlets) and malnutrition (underweight, overweight, obesity) through diet quality in adult populations across urban, periurban and rural areas of Vietnam. Methods: We evaluated food environment by geospatial mapping of food outlets through a transect walk across the “food ecosystem” from rural to urban areas. Diet quality was assessed using the Diet Quality Index – Vietnamese (DQI‐V) comprising Variety, Adequacy, Moderation and Balance components. Malnutrition status was determined using body mass index. We performed a mediation analysis utilising mixed effect models to control for neighbourhood clustering effects. Confounders included age, education, income and nutrition knowledge score. Results: Analysis of data from 595 adult participants (mean ± SD age: 31.2 ± 6.4 years; 50% female) found that longer distance to the nearest food outlet was associated with higher overall DQI‐V (β = 2.0; 95% confidence interval = 0.2–3.8; p = 0.036) and the Moderation component (β = 2.6; 95% confidence interval = 1.2–4.0; p = 0.001). Outlet density shows a negative association with the odds of underweight among women (odds ratio = 0.62; 95% confidence interval = 0.37–0.96). However, we did not observe statistically significant relationships between diet quality and malnutrition. Education and nutrition knowledge scores were positively associated with diet diversity, while income was negatively associated with diet moderation. Conclusions: The findings of the present study have important implications for nutrition and dietetics practice in Vietnam and globally. It emphasises the need to consider various dimensions of sustainable diets, including economic, health and socio‐cultural/political factors. Longer distances to food outlets are associated with higher diet quality, whereas lower food outlet density increases the odds of underweight among women. This poses challenges in balancing modernisation and its adverse effects on sustainable food systems. Socio‐economic status consistently correlated with diet quality and malnutrition, necessitating further research to promote healthy diets across socio‐economic strata

Dietary species richness as a measure of food biodiversity and nutritional quality of diets

Biodiversity is key for human and environmental health. Available dietary and ecological indicators are not designed to assess the intricate relationship between food biodiversity and diet quality. We applied biodiversity indicators to dietary intake data from and assessed associations with diet quality of women and young children. Data from 24-hour diet recalls (55% in the wet season) of n = 6,226 participants (34% women) in rural areas from seven lowand middle-income countries were analyzed. Mean adequacies of vitamin A, vitamin C, folate, calcium, iron, and zinc and diet diversity score (DDS) were used to assess diet quality. Associations of biodiversity indicators with nutrient adequacy were quantified using multilevel models, receiver operating characteristic curves, and test sensitivity and specificity. A total of 234 different species were consumed, of which < 30% were consumed in more than one country. Nine specieswere consumed in all countries and provided, on average, 61% of total energy intake and a significant contribution of micronutrients in the wet season. Compared with Simpson's index of diversity and functional diversity, species richness (SR) showed stronger associations and better diagnostic properties with micronutrient adequacy. For every additional species consumed, dietary nutrient adequacy increased by 0.03 (P < 0.001). Diets with higher nutrient adequacy were mostly obtained when both SR and DDS were maximal. Adding SR to the minimum cutoff for minimum diet diversity improved the ability to detect diets with higher micronutrient adequacy in women but not in children. Dietary SR is recommended as the most appropriate measure of food biodiversity in diets

Vegetable seed systems for ethnic minorities in northern Vietnam for enhanced nutrition and income

Vegetables are a main source of nutrition and income for ethnic minority farmers in Vietnam’s Northern highlands. While the consumption of vegetables and value chains for fresh retail produce and seed markets offer huge opportunities for household nutrition security and development, and particularly women inclusion, current smallholder systems suffer from multiple problems. The Integrated vegetable seed systems development project addressed these issues by elucidating how, and under what conditions, increased access and use of high-quality seed translates into enhanced smallholder nutrition and income security. This poster provides the project highlights presented at the NL-CGIAR Conference, 2-3 November 2022

Research Trends in Evidence-Based Medicine: A Joinpoint Regression Analysis of More than 50 Years of Publication Data

Background Evidence-based medicine (EBM) has developed as the dominant paradigm of assessment of evidence that is used in clinical practice. Since its development, EBM has been applied to integrate the best available research into diagnosis and treatment with the purpose of improving patient care. In the EBM era, a hierarchy of evidence has been proposed, including various types of research methods, such as meta-analysis (MA), systematic review (SRV), randomized controlled trial (RCT), case report (CR), practice guideline (PGL), and so on. Although there are numerous studies examining the impact and importance of specific cases of EBM in clinical practice, there is a lack of research quantitatively measuring publication trends in the growth and development of EBM. Therefore, a bibliometric analysis was constructed to determine the scientific productivity of EBM research over decades. Methods NCBI PubMed database was used to search, retrieve and classify publications according to research method and year of publication. Joinpoint regression analysis was undertaken to analyze trends in research productivity and the prevalence of individual research methods. Findings Analysis indicates that MA and SRV, which are classified as the highest ranking of evidence in the EBM, accounted for a relatively small but auspicious number of publications. For most research methods, the annual percent change (APC) indicates a consistent increase in publication frequency. MA, SRV and RCT show the highest rate of publication growth in the past twenty years. Only controlled clinical trials (CCT) shows a non-significant reduction in publications over the past ten years. Conclusions Higher quality research methods, such as MA, SRV and RCT, are showing continuous publication growth, which suggests an acknowledgement of the value of these methods. This study provides the first quantitative assessment of research method publication trends in EBM

Retail Diversity for Diet Diversity - Dietary Intake Data

Households were randomly selected from the field sites, where women were asked to recall all the foods and drinks they consumed the previous day, and specifying where those foods were sourced from. An adapted quantiative 24hour recall methodology was applie

Impact of seed system interventions on food and nutrition security in low and middle-income countries: A scoping review

The role of seed systems in nutrition of smallholder farmers has received little attention. This review mapped evidence of impact on nutrition, identifying themes from 43 studies as direct seed supply, improving seed access, and adoption of improved seed. Results had more positive than mixed/negative impacts on food security, household resilience, dietary quality, and diversity and/or nutrition status. Studies were skewed towards cereals and improved seed compared to other species and traditional/indigenous seed, and geared towards seed rather than the seed system. While most evaluated seed adoption and impact, few reported strategies for sustainable inclusion into farmer seed systems. Enabling factors contributing to positive nutrition impact included use of multi-component interventions and gender-sensitive and participatory approaches that consider the contexts