Research that supports older Australians to eat more vegetables and adopt plant-based protein diets, leading to better health and a sustainable future.
What is the Plants4Age research study?
As Australians age, eating more vegetables and choosing plant-based proteins can support better health and a more sustainable future. Yet, many older adults continue to rely heavily on animal-derived proteins and consume few vegetables and other plant-based foods.
Plants4Age is a collaborative research initiative led by the Deakin Institute for Physical Activity and Nutrition and the Deakin Centre for Advanced Food Sciences, supported by Hort Innovation. The project aims to build robust scientific evidence on the benefits of plant-based diets for muscle health in older adults, as well as create a clear understanding of consumer drivers and barriers for the adoption of vegetable/plant-based diets.
How it works
The study will combine nutritional science with sensory and consumer research as well as other factors that influence the adoption of plant-based diets.
Observational epidemiological studies
We will analyse a variety of datasets to understand which plant-based foods older consumers are currently eating and how this consumption relates to dietary protein quality.
Sensory and consumer research
We will run sensory and consumer studies to explore how older consumers perceive plant-based diets, including potential barriers and drivers of plant-based food consumption.
Clinical trials
We will conduct a clinical trial with older consumers, altering their diets over a short period and measuring various health indicators at the start and end of the intervention.
Stakeholder mapping and engagement
We will conduct qualitative and quantitative studies with stakeholders – including consumers, food providers, growers and health professionals – to understand the factors influencing the provision, recommendation and consumption of plant-based foods.
“This project will deliver strong foundational evidence to drive the transition towards plant-based protein diets that promote healthy ageing. Achieving this transition requires interdisciplinary research across population, clinical, professional, and consumer levels.”
Want to find out more?
Published research
The protein transition in older adults
Andersen RS, Julien A, Marchese LE, Pace L, Arini HRB, Lam BT, Van Grunsven T, Lundin E, Liem DG, Tieland M. The protein transition in older adults. Proc Nutr Soc. 2026 Aug 4:1-11. doi: 10.1017/S0029665126105382. Epub ahead of print. PMID: 42549546.
Further information
Project funding
Plants4Age has been funded by Hort Innovation, using the vegetable research and development levy and contributions from the Australian Government.
