(1) Workplace nutrition interventions have garnered attention as a pivotal component of employee well-being and organisational productivity. However, the effectiveness of various intervention types remains inconclusive. This review aims to systematically evaluate the efficacy of cognitive, behavioural, and mixed nutrition interventions in the workplace, considering the nuances of intervention design, setting, and target demographics. (2) A comprehensive umbrella review was conducted, categorising the existing literature into person-oriented and environmental strategies. This review was prepared in line with the Joanna Briggs Institute methodology for umbrella reviews and the preferred reporting items for systematic reviews and meta-analyses reporting standard. (3) The analysis revealed a lack of definitive evidence supporting the universal effectiveness of any single intervention type. Nonetheless, behavioural and mixed interventions demonstrated more favourable outcomes as compared to purely cognitive strategies. Factors such as intervention design, workplace setting, and target group characteristics were identified as significant determinants of the intervention success. (4) The review emphasises the imperative for additional investigations that utilise evidence-based approaches to formulate sound guidelines for efficacious nutrition interventions in occupational settings. This review functions as a foundational framework for guiding both scholarly research and the pragmatic execution of nutrition programs in the workplace.

Background: Antioxidants are widely recognized for their potential health benefits, including their impact on cognitive function and gut microbiome modulation. Understanding these effects is essential for exploring their broader clinical applications. Objectives: This review aims to evaluate the effects of antioxidants on the gut microbiome and cognitive function, with a focus on findings from randomized controlled trials (RCTs). Methods: The studies involved human participants across a range of age groups, with interventions encompassing natural antioxidant sources, such as berries, as well as specific antioxidant vitamins. An extensive search across PubMed, SCOPUS, and Web of Science databases identified six relevant RCTs, each evaluated for potential bias. Results: These studies focused on a variety of antioxidant-rich products, including both naturally derived sources and supplemental forms. Antioxidants, including vitamins C, B2, and D, along with polyphenols such as xanthohumol, fermented papaya, peanuts, and berry extracts, demonstrate the potential to support cognitive function and promote gut health through mechanisms that modulate microbiome diversity and reduce inflammation. However, observed changes in microbiome diversity were modest and inconsistent across the studies. Conclusions: While preliminary evidence suggests that antioxidants may benefit gut health and cognitive function, the heterogeneity of existing studies limits their immediate clinical applicability. Additionally, more robust RCTs are needed to substantiate these findings and guide future interventions.

(1) Workplace nutrition interventions have garnered attention as a pivotal component of employee well-being and organizational productivity. However, the effectiveness of various intervention types remains inconclusive. This review aims to systematically evaluate the efficacy of cognitive, behavioral, and mixed nutrition interventions in the workplace, considering the nuances of intervention design, setting, and target demographics. (2) A comprehensive umbrella review was conducted, categorizing existing literature into person-oriented and environmental strategies. This review was prepared in line with the Joanna Briggs Institute methodology for umbrella reviews and the preferred reporting items for systematic reviews and meta-analyses reporting standard. (3) The analysis revealed a lack of definitive evidence supporting the universal effectiveness of any single intervention type. Nonetheless, behavioral and mixed interventions demonstrated more favorable outcomes compared to purely cognitive strategies. Factors such as intervention design, workplace setting, and target group characteristics were identified as significant determinants of intervention success. (4) The review emphasizes the imperative for additional investigations that utilize evidence-based approaches to formulate sound guidelines for efficacious nutrition interventions in occupational settings. This review functions as a foundational framework for guiding both scholarly research and the pragmatic execution of nutrition programs in the workplace.

Background: An unhealthy diet is a major modifiable risk factor for chronic disease, and workplace environments may pose specific barriers to healthy eating. Methods: This single-arm, pre–post workplace intervention assessed short-term changes in perceived dietary barriers (primary outcome) and healthy eating intentions (secondary outcome) among school employees (n = 36; 83.3% women; mean age = 46.8 years). The 60 min participatory session integrated behavioral economics principles, practical nutrition exercises, and psychological strategies designed to enhance self-efficacy, optimism, and resilience. Results: The total perceived barrier score decreased significantly (Δ = −1 [IQR −2 to 0]; the paired Wilcoxon signed-rank test = −4.689, p < 0.001, r = −0.78). Post-intervention (T2), the proportion of participants reporting an intention to prepare healthy meals increased (McNemar’s test, p < 0.001; OR = 10.0, 95% CI 1.8–54.5). The session was rated as highly useful (mean = 8.3/10), and at the three-week follow-up (T3), 91.7% of participants reported maintaining at least one dietary change. Conclusions: Although limited by its single-arm design and short follow-up, this pilot study suggests that a brief, participatory behavioral intervention may be a feasible and acceptable approach to support healthier eating in the workplace.

Background/Objectives: This study aimed to evaluate how women working in office environments perceive their workplace as promoting healthy eating behaviors through employer-led actions. Methods: This cross-sectional study was conducted among 230 professionally active women employed in office settings in Poland. Data were collected using the Computer-Assisted Web Interview (CAWI) method. Participants were divided into two groups based on their perceived level of workplace support for healthy eating behaviors, as measured by the Workplace Healthy Eating Scale. Group 1 (n = 125; 54.3%; mean score = 15.69, SD = 3.76) and Group 2 (n = 105; 45.7%; mean score = 29.88, SD = 5.15) reflected low and high perceived support, respectively. Results: A linear regression model was employed to assess the association between the perceived level of support and specific workplace initiatives, including access to fresh fruits and vegetables, meal preparation facilities, cafeteria usage, lectures on nutrition, cooking workshops, and individual dietary consultations. For Group 1, access to fresh fruits and vegetables was the only factor significantly associated with a positive perception of the workplace as promoting healthy eating (p = 0.003), explaining 6.5% of the variance (adjusted R² = 0.065). In Group 2, both access to fresh produce and participation in cooking workshops were significantly associated with positive workplace perceptions (p < 0.001), explaining 41% of the variance (adjusted R² = 0.410). Conclusions: Access to fresh produce is a key determinant of employees’ perceptions of workplace support for healthy eating behaviors, with a notably greater impact observed when combined with additional activities such as cooking workshops. Employer-led initiatives focusing on practical dietary engagement appear to be effective in enhancing workplace perceptions of health promotion.

The aim of the study was to assess the effectiveness of the educational intervention on nutrition in the elderly population with high level of self-efficacy. Material and methods: Pretest-posttest quasi-experimental study was used. Educational intervention on nutrition consisting of...