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Objective: In response to The New Nutrition Science Project's Giessen Declaration, we provide here a case for a more fully described and integrated 'social' dimension within the nutrition sciences. Design: This paper explores what we mean when we argue for socially engaged nutrition sciences (SENS), and describes the disciplinary fields, epistemologies and methodologies that contribute to SENS' potential rich diversity and value. Additionally, the current positioning of 'social nutrition' research within the nutrition sciences is critiqued. Results: There is fairly broad acceptance of the 'social' as an important contributor to successful public health nutrition situation analyses, intervention planning and implementation. However, we assert that the 'social' is not merely a contributor, the usual position, but is central. Implications for policy and practice that could follow from this shift in approach are outlined. Conclusions: We call for researchers, educators, policy makers and practitioners alike to re-imagine the role and purpose of social science enquiry that could enable the delivery of more socially engaged nutrition sciences. [ABSTRACT FROM AUTHOR]

Objective: To estimate the extent of food insecurity in South Australia and its relationship with a variety of socio-economic variables., Design: Data collected routinely from 2002 to 2007 by SA Health were analysed to explore food security in the State's population. An ecological analysis of data collected by the South Australian Monitoring and Surveillance System (SAMSS) that collects data on key health indicators. Questions on food security are asked periodically from July 2002 to December 2007., Setting: South Australia., Subjects: Over 37,000 interviewees took part in SAMSS surveys. Questions about food security were asked of 19,037 subjects. The sample was weighted by area, age and gender so that the results were representative of the South Australian population., Results: Seven per cent (1342/19,037) of subjects reported running out of food during the previous year and not having enough money to buy food (food insecurity). Logistic regression analysis found food insecurity to be highest in households with low levels of education, limited capacity to save money, Aboriginal households, and households with three or more children., Conclusions: The study confirms that food insecurity is strongly linked to economic disadvantage. Increasing cost of food is likely to exacerbate food insecurity. This is of concern given that food insecurity is associated with poor health, especially obesity and chronic disease. Comprehensive action at all levels is required to address root causes of food insecurity. Regular surveillance is required to continue to monitor levels of food security, but more in-depth understandings, via qualitative research, would be useful.