Dr Olivia Wills
Dr Olivia Wills is an Accredited Practising Dietitian (APD), Associate Lecturer and Associate Research Fellow in the School of Medical, Indigenous and Health Sciences at the University of Wollongong.
Olivia's work integrates clinical dietetics, research and health professional education to advance evidence-based nutrition practice and support the development of future dietitians. Her research focuses on modifiable lifestyle behaviours and neurological health, with a particular emphasis on translating emerging evidence into practical, person-centred strategies that enhance health outcomes and quality of life for people living with neurodegenerative disease.
Alongside her research, Olivia is actively involved in teaching across undergraduate and postgraduate nutrition and dietetics programs and draws on more than five years of experience in private dietetic practice to connect research, clinical care and education.
Project synopsis
While nuts are recognised as an important component of brain-healthy dietary patterns and are rich in nutrients relevant to metabolic and neurological health, their intake has been difficult to quantify accurately, particularly when consumed as ingredients within mixed foods. Australia’s first nut-specific food composition database was developed by our team in 2018; however, it no longer reflected the current food supply or the expanded nutrient data available in the most recent Food Nutrient Composition Database (AUSNUT) released in September 2025. With support from a 2025 AEC Conference Small Grant, we successfully updated the Australian Nut Food Composition Database using AUSNUT 2023 and contemporary food supply information, ensuring it is fit-for-purpose for future nut intake research.
The resulting database is a ready-to-use resource that enables more accurate estimation of nut intake in both clinical and population-based research, strengthening investigations into the relationship between nut consumption, cardiometabolic health, brain health, disease burden, and wellbeing. The updated database has broad applications across nutrition and public health research, and completion of this project has already generated new opportunities for translation and impact.
Building on this work, our team was successful in securing a contract research grant with industry partners to apply the updated database in population nutrition research. In addition, we plan to submit an incubator grant to apply the database to specific clinical populations, one being multiple sclerosis, to better understand the role of nut consumption in disease outcomes. The project has also strengthened national and international collaborations among early- and mid-career researchers with expertise in nut research, clinical dietetics, coding, and statistics, establishing a strong team for future interdisciplinary research.
Research team
- Dr James Dorey
- Professor Yasmine Probst
- Dr Elizabeth Neale
- Dr Sze Yen Tan
- Dr Tyler J Titcomb
- Dr Cassandra Nikodijevic