A special issue addressing healthful food access and food insecurity: risk factors, behavioral variables, interventions, and measurement.

This article introduces a special issue in Translational Behavioral Medicine that focuses on translational aspects of food insecurity research. The purpose of this special issue was to add to the evidence base to inform short- and intermediate-term intervention development and implementation and to spark additional future discourse around these important topics. The special issue included 12 articles and 2 commentaries roughly evenly split across four topic areas, including subpopulation food insecurity risk factors; food behaviors and psychosocial variables; implementation and/or evaluation of food insecurity interventions; and food insecurity-related measurement issues. The articles in this special issue offer a number of contributions to the translational literature specific to food insecurity. They add to our understanding that depression, stress, and social isolation (sometimes related to language barriers) may play a large role in individuals' food insecurity experience. The articles explored the differences between food insecure and food secure households in relation to food and grocery shopping behaviors, and nutritional self-efficacy. In addition, authors described the implementation and/or efficacy of interventions meant to promote healthful diets and food access among food insecure populations. And finally, several studies explored current measurement issues such as intra-household subjectivity, disconnect between perceived and objective measures of food access, and a need for more holistic and nutrition-focused measurement approaches. While there are deeper systemic factors driving food insecurity, the findings provided in this special issue can help guide those addressing the current challenges faced by food insecure households that struggle to achieve healthful diets.