ArticleBMC public health2025
Effects of a cafeteria-based sustainable diet intervention on wellbeing at a large German hospital: a quasi-experimental study.
Article in BMC public health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed, 1 synthesis or guideline pooled it.
- The Health and Environmental Impacts, Safety, and Affordability of the EAT-Lancet Planetary Health Diet: A Multidisciplinary Systematic Review and Meta-Analysis.Advances in nutrition (Bethesda, Md.) · 2026Pooled it
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8 authors.
Funding
Abstract
purposeSustainable diets are vital to tackle climate change and promote health. They may also offer significant benefits for mental and physical wellbeing. Creating a sustainable food environment at the working place could therefore contribute to the wellbeing of employees. In this quasi-experiment, we investigated effects of providing vegan menus and nutritional information in a cafeteria of Heidelberg University Hospital on mental wellbeing and health-related quality of life (HRQoL) among customers.
methodsRegular customers (> one visit/week) in the largest cafeteria (intervention group, n = 121) and in all other cafeterias (control group, n = 128) completed a questionnaire before and after the 3-month intervention period (16/01/2023-06/04/2023). We measured mental wellbeing using the Warwick-Edinburgh Mental Wellbeing Scale (WEMWBS), HRQoL using the Short Form- 36 Questionnaire (SF-36) and adherence to the Planetary Health Diet (PHD) using a Food Frequency Questionnaire. Difference-in-differences (DID) were calculated for the intervention effects on WEMWBS and SF-36 scores. Cross-sectional associations of the PHD-Index with these scores were calculated at baseline.
resultsIn this study population (N = 249; women: 65%), the mean baseline WEMWBS was 54.46 (standard deviation, SD: 7.13) in the control group and 55.19 (SD: 6.41) in the intervention group. The difference-in-differences was 0.61 (95% confidence interval, CI: - 0.78, 1.99; p = 0.39). Effects were insignificant for all SF-36 outcomes. Adherence to the PHD-Index was positively associated with self-rated health (beta: 0.48; 95% CI: 0.20, 0.75; p <.001).
conclusionThis worksite cafeteria-based diet intervention yielded nominal improvements in mental and physical wellbeing among customers; this could be mediated by increased adherence to the PHD. These trends warrant verification in larger-sized intervention studies with more intense intervention dosages. Our findings underline the importance of sustainable food environments for planetary health. The protocol was registered at the German-Clinical-Trial-Register on 22/04/2024 (DRKS00032620).
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