Social capital is defined as the resources available to individuals and groups through membership in social networks. However, multiple definitions, distinct dimensions and subtypes of social capital have been used to investigate and theorise about its relationship to health on different scales, creating a confusing picture. This heterogeneity makes it necessary to systematise social capital measures in order to build a stronger foundation in terms of how these associations between the different aspects of social capital and each specific health indicator develop. We aim to provide an overview of the measurement approaches used to measure social capital in its different dimensions and scales, as well as the mechanisms through which it is presumed to influence health. Understanding the mechanisms through which these relationships develop may help to refine the existing measures or to identify new, more appropriate ones.

The measurement of food insecurity is essential to monitor the prevalence, risk factors, consequences and effects of food insecurity and the interventions and policies implemented to tackle it. Yet, how best to apply it remains an unsettled issue due to the multifaceted and context-dependent nature of food insecurity. We report a scoping review of measures of food insecurity at the individual and household level in high-income countries with the final purpose of facilitating a catalogue of instruments to be used by both researchers and practitioners. The scoping review was conducted following the methodological framework of Arksey and O’Malley and the Joanna Briggs Institute guidelines. We included all types of documents published between 2000–2020 using instruments that estimate food insecurity at both individual and household level in high-income countries, and with respondents including adolescents, adults, and elderly. We identified a total of 23 measurement strategies being used in 33 peer-reviewed publications and 114 documents from the grey literature. Our results show that most measures focus on the access dimension of food insecurity and that further research is required to develop measures that incorporate aspects of quality of dietary intake and relevant individual, household and social conditions related to food insecurity.

In recent years, the interest in food and nutrition insecurity in high-income countries has skyrocketed. However, its recognition in Europe is still developing. This perspective summarizes the evidence on food and nutrition insecurity across Europe in terms of prevalence, consequences, and current mitigation strategies, with the aim of outlining the challenges and opportunities for dietitians. Prevalence in the general population ranges between 5% and 20%, with higher rates identified in women, children, older adults, single-parent households, those with low educational attainment, and on low or unstable income and/or employment. In users of food aid, the prevalence of food insecurity is above 70%. Responses to food and nutrition insecurity include welfare policies and food assistance programs at regional and national levels. However, most current strategies are not successful in tackling the structural drivers of food and nutrition insecurity, nor do they guarantee diet quality. Despite limited involvement to-date, dietitians can play an important role in addressing food and nutrition insecurity across Europe. This narrative identifies 4 areas: 1) create awareness of the existence and severity of food and nutrition insecurity, 2) advocate for comprehensive, robust data on the determinants and prevalence, 3) partner with diverse stakeholders, social assistance providers, local authorities, and nongovernmental organizations in a comprehensive, intersectoral, and integrated manner, 4) participate in the development of political instruments and interventions that ensure equitable access to high-quality safe food.

Diet-related health inequalities are a persistent public health challenge in high-income countries, disproportionately affecting socially and economically disadvantaged populations. This study aims to map the existing evidence on diet-related health inequalities in high-income countries through a scoping review of observational studies, identifying populations most affected and key dietary outcomes across social determinants of health. We conducted a systematic search of MEDLINE, Web of Science, Scopus, and Embase for observational studies published between January 2011 and March 2021. Eligible studies assessed diet-related health outcomes stratified by ≥1 Place of Residence, Race/Ethnicity, Occupation, Gender/Sex, Religion, Education, Socioeconomic Status, and Social Capital (PROGRESS)-Plus determinant. We followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews guidelines and registered the review with International Prospective Register of Systematic Reviews (CRD42021234567). Data were charted and analyzed thematically according to PROGRESS categories. A total of 163 studies were included. Most studies focused on education, socioeconomic status, and place of residence, whereas fewer addressed gender identity, sexual orientation, or disability. Common dietary indicators included fruit and vegetable intake, dietary patterns, and food group consumption. Evidence consistently showed that lower education and income levels were associated with poorer dietary outcomes. Notably, certain population groups (for example, ethnic minorities, rural residents, and individuals with low education or income) experienced cumulative disadvantages. The scoping review highlights persistent and intersecting diet-related health inequalities in high-income countries. It underscores the need for standardized indicators and intersectional approaches in monitoring, research, and policy making.