Helen Trevena

Ms. Helen Trevena

orcid

Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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21 August 2014 in JMIR mHealth and uHealth
Verified
Journal Article
Open access
EDElizabeth Dunford
Elizabeth Dunford
HTHelen Trevena
Helen Trevena
CGChester Goodsell
Chester Goodsell
KNKa Hung Ng
Ka Hung Ng
Jacqui WebsterJacqui Webster
Jacqui Webster
Bruce NealBruce Neal
Bruce Neal
Front-of-pack nutrition labeling (FoPL) schemes can help consumers understand the nutritional content of foods and may aid healthier food choices. However, most packaged foods in Australia carry no easily interpretable FoPL, and no standard FoPL system has yet been mandated. About two thirds of Australians now own a smartphone. We sought to develop a mobile phone app that would provide consumers with easy-to-understand nutrition information and support the selection of healthier choices when shopping for food. An existing branded food database including 17,000 Australian packaged foods underpinned the project. An iterative process of development, review, and testing was undertaken to define a user interface that could deliver nutritional information. A parallel process identified the best approach to rank foods based on nutritional content, so that healthier alternative products could be recommended. Barcode scanning technology was identified as the optimal mechanism for interaction of the mobile phone with the food database. Traffic light labels were chosen as the preferred format for presenting nutritional information, and the Food Standards Australia New Zealand nutrient profiling method as the best strategy for identifying healthier products. The resulting FoodSwitch mobile phone app was launched in Australia in January 2012 and was downloaded by about 400,000 users in the first 18 months. FoodSwitch has maintained a 4-plus star rating, and more than 2000 users have provided feedback about the functionality. Nutritional information for more than 30,000 additional products has been obtained from users through a crowdsourcing function integrated within the app. FoodSwitch has empowered Australian consumers seeking to make better food choices. In parallel, the huge volume of crowdsourced data has provided a novel means for low-cost, real-time tracking of the nutritional composition of Australian foods. There appears to be significant opportunity for this approach in many other countries.

20 July 2020 in Food Security
Verified
Journal Article
Closed access
PDF file
PFPenny Farrell
Penny Farrell
ATAnne Marie Thow
Anne Marie Thow
JTJillian Tutuo
Jillian Tutuo
NNNichol Nonga
Nichol Nonga
PVPenina Vatucawaqa
Penina Vatucawaqa
NANeil L. Andrew
Neil L. Andrew

19 September 2014 in Nutrients
Verified
Journal Article
Open access
PDF file
HTHelen Trevena
Helen Trevena
Bruce NealBruce Neal
Bruce Neal
EDElizabeth Dunford
Elizabeth Dunford
JWJason Wu
Jason Wu
The Australian Food and Health Dialogue set sodium reduction targets for three food categories (breads, ready-to-eat breakfast cereals and processed meats) to be achieved by December, 2013. Sodium levels for 1849 relevant packaged foods on the shelves of Australian supermarkets between 2010 and 2013 were examined. Changes in mean sodium content were assessed by linear mixed models, and the significance of differences in the proportion of products meeting targets was determined using chi-squared or McNemar’s tests. The mean sodium level of bread products fell from 454 to 415 mg/100 g (9% lower, p < 0.001), and the proportion reaching target rose from 42% to 67% (p < 0.005). The mean sodium content of breakfast cereals also fell substantially from 316 to 237 mg/100 g (25% lower, p < 0.001) over the study period. The decline in mean sodium content of bacon/ham/cured meats from 1215 to 1114 mg/100 g (8% lower, p = 0.001) was smaller, but associated with a rise in the proportion meeting the target from 28% to 47%. Declines in mean sodium content did not appreciably differ between companies that did and did not make public commitments to the targets. These data show that the Australian food industry can reduce salt levels of processed foods and provide a strong case for broadening and strengthening of the Food and Health Dialogue (FHD) process.

1 January 2014 in International Journal of Behavioral Nutrition and Physical Activity
Verified
Journal Article
Open access
PDF file
MLMary-Anne Land
Mary-Anne Land
Jacqui WebsterJacqui Webster
Jacqui Webster
ACAnthea Christoforou
Anthea Christoforou
Claire JohnsonClaire Johnson
Claire Johnson
HTHelen Trevena
Helen Trevena
Bruce NealBruce Neal
Bruce Neal
Salt reduction efforts usually have a strong focus on consumer education. Understanding the association between salt consumption levels and knowledge, attitudes and behaviours towards salt should provide insight into the likely effectiveness of education-based programs. A single 24-hour urine sample and a questionnaire describing knowledge, attitudes and behaviours was obtained from 306 randomly selected participants and 113 volunteers from a regional town in Australia. Mean age of all participants was 55 years (range 20–88), 55% were women and mean 24-hour urinary salt excretion was 8.8(3.6) g/d. There was no difference in salt excretion between the randomly selected and volunteer sample. Virtually all participants (95%) identified that a diet high in salt can cause serious health problems with the majority of participants (81%) linking a high salt diet to raised blood pressure. There was no difference in salt excretion between those who did 8.7(2.1) g/d and did not 7.5(3.3) g/d identify that a diet high in salt causes high blood pressure (p = 0.1). Nor was there a difference between individuals who believed they consumed “too much” 8.9(3.3) g/d “just the right amount” 8.4(2.6) g/d or “too little salt” 9.1(3.7) g/d (p = 0.2). Likewise, individuals who indicated that lowering their salt intake was important 8.5(2.9) g/d vs. not important 8.8(2.4) g/d did not have different consumption levels (p = 0.4). The absence of a clear association between knowledge, attitudes and behaviours towards salt and actual salt consumption suggests that interventions focused on knowledge, attitudes and behaviours alone may be of limited efficacy.

21 August 2015 in Nutrients
Verified
Journal Article
Open access
PDF file
HTHelen Trevena
Helen Trevena
Bruce NealBruce Neal
Bruce Neal
EDElizabeth Dunford
Elizabeth Dunford
HHHila Haskelberg
Hila Haskelberg
JWJason Wu
Jason Wu
Supermarket private-label products are perceived to be lower quality than their branded counterparts. Excess dietary sodium in foods contributes to high blood pressure and cardiovascular disease. Sodium concentrations in products are an important indicator of quality. We compared the sodium content of 15,680 supermarket private-label and branded products, available in four Australian supermarkets between 2011–2013, overall and for 15 food categories. Mean sodium values were compared for: (1) all products in 2013; (2) products in both 2011 and 2013; and (3) products only in 2013. Comparisons were made using paired and unpaired t tests. In each year the proportion of supermarket private-label products was 31%–32%, with overall mean sodium content 17% (12%–23%) lower than branded products in 2013 (p ≤ 0.001). For products available in both 2011 and 2013 there was a ≤2% (1%–3%) mean sodium reduction overall with no difference in reformulation between supermarket private-label and branded products (p = 0.73). New supermarket private-label products in 2013 were 11% lower in sodium than their branded counterparts (p = 0.02). Supermarket private-label products performed generally better than branded in terms of their sodium content. Lower sodium intake translates into lower blood pressure; some supermarket private-label products may be a good option for Australians needing to limit their sodium intake.

29 December 2014 in Public Health Nutrition
Verified
Journal Article
Open access
PDF file
HTHelen Trevena
Helen Trevena
JKJenny Claire Kaldor
Jenny Claire Kaldor
SDShauna M Downs
Shauna M Downs
Objective: The development of food policy is strongly influenced by the understanding and position actors adopt in their ‘framing’ of sustainability. The Australian Government developed a National Food Plan (2010–2013). In public consultations on the National Food Plan Green Paper, the government sought stakeholders’ views on sustainability. The present study examined the way in which the food industry and civil society organizations framed sustainability in their submissions to the Green Paper.Design: Submissions by food industry actors and civil society organizations were analysed using a framing matrix that examined positioning, drivers, underlying principles and policy solutions related to sustainability. Submissions were open coded and subsequently organized based on themes within the framing matrix.Setting: Australia.Subjects: One hundred and twenty-four written submissions (1420 pages).Results: While submissions from industry and civil society organizations often framed sustainability similarly, there were also major differences. Civil society organizations were more likely to make the link between the food supply and population health, while industry was more likely to focus on economic sustainability. Both viewed consumer demand as a driver of sustainability, welcomed the idea of a whole-of-government approach and stressed the need for investment in research and development to improve productivity and sustainable farming practices.Conclusions: The meaning of sustainability shifted throughout the policy process. There are opportunities for creating shared value in food policy, where the health, environment and economic dimensions of sustainability can be compatible. However, despite pockets of optimism there is a need for a shared vision of sustainability if Australia is to have a food policy integrating these dimensions.