Of all the effects of ageing, perhaps the most dreaded, is dementia. It's confronting for the person, their family, and everyone around them. The common perception is that there isn't much that can be done if you get it. That, however, is probably not true.Tara Jewell is studying this question for her PhD at the University of Canberra. Her work centres aroundthe brain and healthy ageing. In particular, she's looking at personalised nutrition. Tuning nutrition for the individual is a new and promising field that has many sides, including genetics and AI.  Tara is studying at the Centre for Ageing Research and Translation at the University of Canberra.Interview by Lucy and Rod.