It is evident that the modification of dietary patterns is a necessary precondition of disease prevention and health improvement. Changing nutritional habits also has deep-rooted consequences on the environmental burden. The majority of similar previous studies have analyzed the change in greenhouse gas emissions against theoretical modifications in current food consumption. The analysis on the effect of diet on the water footprint is also gaining in importance, since water supply is a critical global issue. Based on current nutritional patterns of a Central European country—Hungary—as well as dietary recommendations and scientific literature, we generated six dietary scenarios and determined the consequences of these on green (originally from precipitation) and blue (sourced from surface or groundwater) water consumption and dietary quality. Compared to the baseline scenario (current local nutritional pattern) of both genders, based on the integrated aspect of water footprint and dietary quality, the most disadvantageous scenario was the ketogenic (ca. −2% in dietary quality, +18% in blue water footprint, and +16% in green water footprint) and the most advantageous was the sustainable scenario (ca. +9% in dietary quality, −42% in green water footprint, and −29% in blue water footprint). As a summary it can be stated, that (1) there is no clear linear relationship between the “healthiness” and water footprint of different diets, but (2) a more balanced diet, which integrates nutritional and environmental considerations could decrease the environmental burden in an efficient way.

Background The tool kits of bibliometrics and science mapping provide a standard methodology to map the knowledge base of specific fields of science. The aim of the present research is the analysis of the recent international trends of sport nutrition science, as well as the primary identification of the research topics and results of sport nutrition science via enhanced bibliometric methods for the 2000–2018 time period. Methods Altogether, 3889 publications were included in this study. We identified the most relevant sport nutrition topics by running a community detection algorithm on the proximity network constructed via network text analysis. The key issues and key concepts of sport nutrition topics as well as their relations were evaluated via network analysis. Besides, we carried a chronological analysis of topics out and a scientometric evaluative analysis was also created. Results We identified the four main basic groups from which the 18 most characteristics topics were analyzed. The 18 topics are the following: ‘soccer and physiology’, ‘carbohydrate metabolism’, ‘muscle physiology: alkalosis and acidosis’, ‘muscle mass gain and dietary supplementation’, ‘fluid balance and hydration’, ‘dietary intake and nutrition knowledge’, ‘determination of energy need of athletes’, ‘bone health and female athlete triad’, ‘hydration strategy’, ‘body weight management’, ‘nutritional strategies and human skeletal muscle’, ‘dietary supplementation of nitrates’, ‘oxidative stress and dietary supplement use’, ‘dietary supplement use and doping’, ‘oxidative stress and inflammation and dietary antioxidants’, ‘exercise adaptation and nutritional strategies’, ‘gut microbiota’, ‘celiac disease’. Regarding the size of the topic, researches on sport nutrition science have put the focus on the following three groups: ‘muscle mass gain and dietary supplementation’, ‘carbohydrate metabolism’, ‘oxidative stress and dietary supplement use’. The greatest scientific impact can be ascribed to the following topics: ‘nutritional strategies and human skeletal muscle’, ‘dietary supplementation of nitrates’, ‘body weight management’, and ‘gut microbiota’. Conclusions Scientific output on sport nutrition has continuously been rising between 2000 and 2018. The ratio of topics related to sport nutrition but predominantly connected to basic research has decreased significantly within all publications. The results of this study confirm the role of science mapping in the identification of specific research topics and primary research directions in the field of sport nutrition science.

Food production creates 70% of the total anthropogenic water footprint, and it is the main cause of water pollution. Thus, more sustainable diets could contribute to the achievement of the Sustainable Development Goals. A linear programming-based stepwise optimization was designed to create dietary water footprint-reduced, culturally acceptable, and healthier diets in the case of Hungary based on a representative dietary survey. Optimization resulted in a considerable total dietary water footprint reduction (women: 18%; men: 28%) with a moderate dietary shift (~32%). Milk and dairies (observed: ~31.5%, optimized: ~20.5%) and meats and meat products (observed: ~28.0%, optimized: 28.9%) contributed the most to the dietary water footprint. In the water footprint–healthiness synergy, the vegetables, eggs, poultries, and fermented dairies were the most beneficial, increasing in amount, while fatty dairies, foods high in added sugar, and meat products were the most non-beneficial food sub-groups, decreasing in amount in the optimized diets. The problematic nutrients to fulfill in the optimized diets were energy, dietary fibers, sodium, vitamin D, zinc, vitamin B12, calcium, iron, and potassium at the maximum water footprint reduction. The study provides supporting evidence about the dietary water footprint–healthiness synergy for the further improvement of the national food-based dietary guideline.

Diet optimization is a powerful approach for identifying more sustainable diets that simultaneously consider nutritional, economic, cultural, and environmental dimensions. This study aimed to develop an innovative multilevel approach called Individual Diet Including Global Objectives Optimization (INDIGOO) for designing diets that fulfill nutritional requirements and minimize dietary habit shifts at the individual level while attaining environmental impact reduction targets at the population level. For each individual in a representative sample from the French adult population (INCA2 survey 2006–2007; n = 1918), isocaloric and nutritionally adequate optimized diets with minimal shifts from the observed diet were designed. Environmental targets (including a 30% greenhouse gas emissions (GHGEs) reduction) were applied either similarly for each individual (original approach) or at the population level (INDIGOO). Compared with the original approach, INDIGOO enabled smaller dietary changes while distributing the contribution to the overall 30% GHGEs reduction more fairly among individuals (contributions ranging from −69.5% to +64%). For 6.4% of individuals, INDIGOO allowed an increase in GHGEs (+11% on average). Conversely, individuals with the greatest decrease in GHGEs (−45% on average) were characterized by high energy intake and high animal-based products, water, and other beverage consumption. INDIGOO is a promising multilevel approach to support food policy development.

Sustainable nutrition (SN) considers the environmental impact of food production. This study aims to analyse the relationship between nutrient density and water footprint (WF) of the most consumed food items in Hungary and to create a classification of nutrients. Based on a comprehensive analysis of literature and different data sources, the authors analysed the stochastic relationship between WF and nutrient density of different food items by Spearman's rank correlation. The analysis proved significant (P<0.05) relationship between nutrient density and WF of the most relevant food items in Hungary. Based on the classification, there are nutrients that are overconsumed among the Hungarian population and positively correlate with WF (e.g., cholesterol) and there are nutrients that are under-consumed among the Hungarian population and negatively correlate with WF (e.g., dietary fibres). In general, it can be concluded that the re-structuration of food consumption patterns in Hungary is an important and urgent task, which serves both the public health and ecologic goals. These efforts should be based on a complex evaluation of the problem. This study was one initial step to analyse SN focused on Hungary and further studies are definitely needed.

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The exponentially growing quantity of nutrition information creates a new situation and challenge for every stakeholder, from athletes, coaches and nutritionists to policymakers. To measure the perception of the information environment related to healthy eating, the diet information overload scale was developed. The scale consists of eight items, measuring the perceived importance of pieces of information overload on Likert-type scales. The objective of the study was to test the applicability and validity of the diet information overload scale among athletes. A cross-sectional validation study was conducted with elite athletes (n = 177). To validate each item of the scale, we applied Cronbach’s alpha test, and the inner consistency of the scale was analyzed with linear correlation coefficients of the different variables. To evaluate the relationship between question groups, we applied factor analysis. The different fit indices showed a good fit to the model; the Root Mean Square Error of Approximation (RMSEA) value was 0.09 and the Tucker–Lewis index (TLI) value was 0.84. The indicators of reliability (α based upon the covariances = 0.81) produced suitable results; thus, the sport nutrition information overload scale showed high reliability and applicability. Based on the sport nutrition information overload scale, further analysis could be carried out on how to optimize the content of key pieces of sport nutrition-related information.

Az iskolai egészségnevelés, illetve az egészségnevelés hazai és nemzetközi szemléletének bemutatása a neveléstudomány területén részletesen feldolgozott és ismertetett, azonban az egészséges táplálkozásra nevelést mint az egészségnevelés részét még nem, vagy csak részleteiben mutatták be. A kutatás célja ezért az egészséges táplálkozásra nevelés mint értékközvetítés szerepének és lehetőségeinek bemutatása az iskolában, valamint az egészséges táplálkozásra nevelés elméleti alapjainak, az egészséges táplálkozás értékrendszerben elfoglalt helyének ismertetése. Az iskolai oktatás az egészséges táplálkozási magatartás alapja és kialakulásának feltétele. Az egészséges táplálkozásra nevelés az iskolában két formában jelenik meg: az iskolai közétkeztetés és az ahhoz kapcsolódó iskolai reformok, valamint a táplálkozási oktatási intervenciók keretében. A táplálkozástudatosság kialakításában az egyik legfontosabb szocializációs színtér az iskola, amely kiemelkedő szerepet tölt be a gyermekek táplálkozási magatartásának megváltoztatásában.