Background: There is little known about nutrition intervention research involving consumer co-design. The aim of this scoping review was to identify and synthesise the existing evidence on the current use and extent of consumer co-design in nutrition interventions. Methods: This scoping review is in line with the methodological framework developed by Arksey and O'Malley and refined by the Joanna Briggs Institute using an adapted 2weekSR approach. We searched Medline, EMBASE, PsycInfo, CINAHL and Cochrane. Only studies that included consumers in the co-design and met the 'Collaborate' or 'Empower' levels of the International Association of Public Participation's Public Participation Spectrum were included. Studies were synthesised according to two main concepts: (1) co-design for (2) nutrition interventions. Results: The initial search yielded 8157 articles, of which 19 studies were included (comprising 29 articles). The studies represented a range of intervention types and participants from seven countries. Sixteen studies were published in the past 5 years. Co-design was most often used for intervention development, and only two studies reported a partnership with consumers across all stages of research. Overall, consumer involvement was not well documented. No preferred co-design framework or approach was reported across the various studies. Conclusions: Consumer co-design for nutrition interventions has become more frequent in recent years, but genuine partnerships with consumers across all stages of nutrition intervention research remain uncommon. There is an opportunity to improve the reporting of consumer involvement in co-design and enable equal partnerships with consumers in nutrition research.

Introduction Despite the significant expansion and rapid uptake of telehealth services as a COVID-19 response, the pandemic restricted opportunities to involve health consumers in telehealth research. Authentic consumer and community involvement in research begins with engagement in priority-setting. We report here on the process and outcomes of a consumer-led event intended to support involvement of consumers, from early in the research process. Methods In 2022, The University of Queensland's Consumer and Community Network hosted a Consumer Roundtable to ‘bring researchers to the consumer table’ and explore emerging issues and priorities for future research. The event used World Café Method, with three 20-min rounds of small group discussion centred on questions about telehealth experiences, followed by a facilitated harvest discussion about future research directions. Participants’ notes from small group discussions were subjected to conventional inductive content analysis, and a visual record was created in real-time by a graphic artist. Results Twenty-eight consumers and 22 researchers took part. Content analysis identified three main foci from discussions: person-centred care, better access to better care, the (unrealised) potential of telehealth. Research questions prioritised by consumer vote focussed on marginalised groups and stigmatised conditions; differences between telehealth and face-to-face healthcare delivery; and the experience of conveying and receiving compassion via telehealth. Discussion The Consumer Roundtable created early engagement between health consumer representatives and telehealth researchers, which has yielded ongoing partnerships. World Café method proved particularly useful for seeding relationships between researchers and consumers. However, there was limited opportunity to generate consensus about research priorities.