Aim: Negative body image increases the risk of engaging in unhealthy dieting and disordered eating patterns. This review evaluated the impact of habitual social media engagement or exposure to image-related content on body image and food choices in healthy young adults (18-30 years). Methods: A systematic search of six databases of observational literature published 2005-2019, was conducted (PROSPERO Registration No. CRD42016036588).Inclusion criteria were: studies reporting social media engagement (posting, liking, commenting) or exposure to image-related content in healthy young adults. Outcomes were: body image (satisfaction or dissatisfaction) and food choices (healthy eating, dieting/restricting, overeating/binging). Two authors independently screened, coded and evaluated studies for methodological quality. Results: Thirty studies were identified (n = 11 125 participants). Quantitative analysis (n = 26) identified social media engagement or exposure to image-related content was associated with higher body dissatisfaction, dieting/restricting food, overeating, and choosing healthy foods. Qualitative analysis (n = 4) identified five themes: (i) social media encourages comparison between users, (ii) comparisons heighten feelings about the body, (iii) young adults modify their appearance to portray a perceived ideal image, (iv) young adults are aware of social media's impact on body image and food choices, however, (v) external validation via social media [Correction added on 14 October 2019, after first online publication: The affiliations of authors Siân McLean and Linda Brennan have been corrected].

Weight loss was achieved in overweight and obese adults following IER and this loss was comparable to a DER diet. IER may be an effective alternative strategy for health practitioners to promote weight loss for selected overweight and obese people.

A limited number of Victorian local governments address nutrition as a health issue for their Aboriginal populations in policy documents. Nutrition needs to be addressed as a community and social responsibility rather than merely an individual 'behaviour'. Partnerships are required to ensure Aboriginal people lead government policy development.

The aim of this study is to identify if Victorian local governments prioritise Aboriginal health and wellbeing issues through policy and explore the key factors influencing policy and program development and implementation. A sequential explanatory mixed-methods study design utilised a survey to quantify commitment to Aboriginal health policy followed by in-depth interviews that explored how and why policy or programs were in place. Data were analysed separately and then interpreted together. Representatives from 39 of Victoria’s 79 local governments (49%) responded to the survey and 14 were interviewed. Seventy-four per cent had policy and programs addressing Aboriginal health and wellbeing. The key factors influencing policy and program development were: (i) the process of policy and program development and implementation and the role of other policies; (ii) the influence of Aboriginal community characteristics; and (iii) advocacy for Aboriginal health and wellbeing. Underpinning these factors was that local government is ‘working together (in partnership and through collaboration) towards reconciliation’. Victorian local governments that participated in this study appear to prioritise Aboriginal health and wellbeing, especially where collaboration with the Aboriginal community is strong. The effect of policies and their subsequent programs on the health of Aboriginal peoples warrants further exploration.

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