Modeling the Impact of Substituting Meat and Dairy Products with Plant-Based Alternatives on Nutrient Adequacy and Diet Quality.

BACKGROUND: Novel plant-based meat and dairy alternatives are designed to mimic and replace animal-sourced products, yet their nutritional composition differs from traditional alternatives such as legumes and beans. The nutritional impacts of switching from animal-sourced to traditional or novel plant-based alternatives remains unclear. OBJECTIVES: This study aimed to model the impact of partial and complete substitution of animal-sourced meat and dairy products with traditional or novel plant-based alternatives on diet quality and nutrient adequacy in a nationally representative sample of Australian adults. METHODS: Dietary data (1 24-h recall) from the Australian Health Survey 2011-2013 (n = 9115; ≥19 y) were analyzed. Four models simulated partial or complete substitution of animal-sourced meat and dairy with traditional or novel plant-based alternatives. Diet quality was assessed using the Dietary Guideline Index (DGI), and nutrient adequacy was determined using age- and sex-specific nutrient reference values. Modeled diets were compared to a baseline diet using survey-weighted paired t tests. RESULTS: DGI scores improved by 0.3% to 6.0% for all models across all sex and age groups compared to baseline. Improvements in diet quality were greatest for the complete substitution to traditional alternatives (5.1% average increase in DGI). Overall, inclusion of plant-based alternatives (complete or partial) decreased saturated fat and increased dietary fiber. Long-chain n-3 polyunsaturated fatty acids decreased to below adequate intakes for all complete substitution models. Substitution with traditional alternatives decreased sodium and increased calcium, whereas substitution with novel alternatives increased sodium and decreased calcium. CONCLUSIONS: All models using traditional alternatives, and the partial substitution using novel alternatives, showed small but statistically significant improvements in diet quality. Nutrient adequacy varied between models, with nutrients including saturated fat, sodium, calcium, and long-chain fatty acids implicated. Findings highlight the importance of informed choices when switching to traditional or novel plant-based alternatives to prevent suboptimal dietary intake.

Health promotion in emerging collectivist communities: A study of dietary acculturation in the South Sudanese community in Logan City, Australia.

ISSUE ADDRESSED: Understanding dietary acculturation within collectivist communities is required to develop and tailor appropriate health promotion strategies to prevent diet-related chronic diseases. This research explores the journey of the South Sudanese community living in Logan City, Australia in establishing new norms around food choices and practices over time. METHODS: Three semi-structured group interviews and a final community forum of women (n = 20) from the South Sudanese community were conducted. These explored changes in and influences on dietary practices post-settlement. Sessions were recorded, transcribed and thematically analysed using inductive and deductive approaches. Feedback on findings from participants and community members was incorporated. RESULTS: Participants reported dietary acculturation phases, including assimilation, reflection and separation, with a return to traditional foods over time. Factors influencing the transition between phases included; the characteristics of the collectivist community such as shared knowledge, experiences and resources, increased accessibility to traditional foods, and increased food and health literacy as responses to emerging diet-related health issues. CONCLUSIONS: The Logan City South Sudanese community has navigated a new and complex food environment with positive long-term dietary outcomes; however, the initial decline in health due to poor diet on arrival may have been prevented. SO WHAT?: Early intervention and culturally appropriate health promotion strategies that are co-designed and tailored to the characteristics and strengths of newly settled collectivist communities are needed. These should promote the benefits of healthy traditional food habits, while assisting communities to successfully navigate a new food environment.

Toward Sustainable Diets-Interventions and Perceptions Among Adolescents: A Scoping Review.

Adolescence is an important life stage during which shifts toward more healthy and sustainable diets can be promoted. Adolescents have increasing influence over their food choices, informed by their developing personal knowledge and values, affecting long-term dietary behaviors into adulthood. The recent literature regarding adolescents' (1) perceptions of environmentally sustainable diets and (2) interventions to support adolescents to eat sustainably was reviewed in this study. We reviewed published literature that focused on adolescent participants and their perceptions of, or interventions to support, sustainable dietary habits. Five electronic databases were searched to include studies published since 2012 that met the inclusion criteria, including reporting of participants aged between 11 and 18 years, reporting on adolescents' perceptions of sustainable diets or interventions implemented to improve the sustainability of adolescents' diets, and framed in the context of sustainability. Data were extracted, including study and participant characteristics, methodology, and results in relation to each of the 2 research focus areas. Twenty-eight articles were included in the review. Findings suggest that adolescents' understanding of what constitutes sustainable eating is poor. Adolescents who had previously received education regarding sustainable diets valued nature and health, or were from a rural or indigenous community, were more likely to value environmentally sustainable-food choices. Interventions which target adolescents' understanding of and aspiration to make sustainable-food choices appears to improve their attitudes toward sustainable food, whereas interventions to increase the availability of sustainable foods improved the environmental sustainability of adolescents' dietary intake. Multicomponent, tailored, and community-based interventions were most effective; however, the long-term effect of these interventions remains unclear. More research is needed in low- and middle-income countries, with consideration of adolescents' level of autonomy in food choice in local food environments and the long-term effectiveness of interventions. Systematic Review Registration: Open Science Framework identifier osf.io/h3jz6.