My background is in investigating the links between the foods we eat and our chance of getting cancer and heart disease in large population studies. For the Sir Charles Hercus Fellowship, I plan to develop big dietary data in a NZ setting. My research will describe food and nutrient intakes in 1000 NZ adults who have heart disease. I will also determine whether it is possible to run a personalised medicine trial in patients with high blood pressure and a common genetic variant. My long-term vision is to establish a study that collects dietary information from NZers and follows them up via linkage to routinely collected health data. My research will develop a tool that will be able to collect dietary information on hundreds of thousands of NZers. I will also be asking the public about their concerns or barriers to linking their dietary data to routinely collected health data.